NTPC PREVIOUS PAPERS

NTPC Previous Year Placement Paper 2008

- An ice block submerged in the water, if the ice melts level of water (increase, decrease, remains same, none)

- Simply supported beam with w point load at the middle, max. bending moment? (wl/4)

- Simply supported beam with UDL ,max.deflection (wl4/384EI)

- Cantilevel beam point load at tip,max.bending momemt comes at (end)

- When bearing life L10 represents (bearings 10%survive,bearings 10% fails, none )

- For welding high carbon steels which type of flame is used (oxidizing, carburizing, neutral, none)

- Arrange the following cutting tools in decreasing order of machining hardness…Ceramics

- When P1 and P2 are the loads acting on bearings with life L1 and L2 then L1/L2=? L1/L2={P2/P1}10/3

- Product simplification does not mean? (Product characterization)

- Which of the following process has the most scope in manufacturing? CAD/CAM, CAM, CIM, All the above.

- Concurrent engineering means? (Manufacturing, designing, both, none)

- Which manufacturing process yields higher output and increases worker productivity- (process layout, line+process, functional layout)

- 18-4-1 represents-, Tungsten-Cr-Vn

- For which material is negative allowance rovided-(Graphite,steel,bronze,cast iron)

- What is the recrystallisation temperature of tin- (60,300,1000,none)

- What is the purpose of borax in soldering-

- Top gates are provided in which type of casting-(Shallow casting,simple,complex,none)

- Which statement is true regarding simple gear trains-(i/p and o/p shafts r fixed, each shaft has 2 gears, i/p & o/p shafts r moving)

- What is the purpose of normalizing- (Refining of grain structure)

- As the grain size is decreased-(Hardness increases,corrosion resistance decreases,both)

- Isothermal gas is filled in a vessel at a pressure P and temperature T then considering the compressible forces as the height increases pressure ??(linearly increases linearly decreases exponentially increase )

- A bottle is filled with water and air and is tied to a string and is rotated in horizontal direction. Then in which direction will air bubble travel?
(bottom,neck,uniformly spread)

- A empty bottle(in vaccum) filled with a gas at temp T and press P when the pressure of bottle reaches P temperature of the gas is _? (T,T/K,TK)

- Bearing somerfield number _ with load on bearing? (increases,decreases,no change)

- Critical radius for a sphere is-(2k/h)

- Critical radius exist for_ (spherical,cylindrical,both,slab)

- Convectional resistance/internal resistance is called (biot number)

- Nusselt no. is? (hl/k)

- EOQ=?

- Which statement is true regarding critical path method? (i only one critical path exists for a network, more than one with same duration,)

- Shipment cost,inspection cost,storage cost comes under_ (carrying cost ,holding cost,)

- Ischronous governers sensitivity is- (zero,infinite)

- Self energized brakes are-(friction moment acts in the direction of application of force,opposite to the direction of force, does not need a force to act ,)

- The ratio of heat capacities for evaporator and condenser is_ (Zero,infinity)

- When steam and air mixture with partial pressure 0.06 and 0.07 enters a condenser what is the condenser pressure? (0.06,0.07,0.53,0.03)

- In pulverized burning of coal heat transfer from boiler to water occurs through_( predominant radiation, convection, conduction, conduction+convection)

- Rankine cycle efficiency for same parameters increases mostly with_(reheat, regeneration, super heating )

- Ericson cycle with all reversible processes assume_(carnot cycle,stirling,brayton

- Air delivery tank at outlet of reciprocating compressor is provided for_ (provide constant pressure, avoid cavitation, )

- High speed centrifugal pump has _? (vanes faces in forward direction side,backward,radial vanes)

- Thermal efficiency in decreasing order_? (Otto cycle>dual cycle>diesel cycle)

- When a 1000 K body comes in contact with atmosphere at 300K a loss of 9000 KJ heat is transferred. The net available energy transferred is_

- When entropy of a system increases_? (unavailable energy increases )

- Rolling is a process widely used for_?

- Tool nomenclature_?

- In francis turbine movement of steam?

- For low power consumption _? (rake angle should be increased / decreased, nose angle increased/ decreased)

- Continuous chips occur in_? (High speeds,low speeds,both,none)

- Primary forces in a reciprocating engine_? (fully balanced, partially balanced, completely unbalanced, none)

- In proximate analysis pyrogallol is used for analysis of which element_? (nitrogen,oxygen)

- Sulphur content in fuel greatly affects_? (corrosion)

- Heat transfer through radiation can be increased by_? (decreasing emissivity and increases temperature of hot body)

- Which theory of failure clearly explains the failure in case of ductile material? (Maximun shear stress theory or Guests or trescas theory)

When a material is subjected to continuous cycles which limit is being verified? (Endurance limit)

Where is stress concentration maximum? (notches, stress reducing through cuts)

- Power transmitted through a belt drive_? P(T2-T1)

- According to Eulers theory crippling or buckling load is ____ (Wcr = C?2EI/l2)

- During sensible heating, specific humidity_? (remains constant)

- COP of a refrigerator is _? (greater than 1 )

- The maximum temperature in a refrigeration cycle is_? (less than/greater than/equal to critical temperature)

- The pressure at the throat of the nozzle_? (maximum,min)

- For a statically determinate set of forces for equilibrium_? (? f(X), f(Y), f(Z)=0,?M=0)

- For a statically determinate set of forces- (there r as many equations as the no. of unknowns)

- 1-2-3 analysis is used for_? (1.break even analysis, ??)

- A problem on mean time of service something like a salesman has a rating of 120. considering 10% allowance time calculate the time required to serve 120?

- A problem n determining time in a queue?

- Energy equation for a laminar flow is _? (Uniform and steady ,non uniform and unsteady)

- Undercuts in welding occurs due to_? (low welding current, high welding current)

- Work holding equipment in shearing?

- At the centre of a nozzle _? (Mach no<1 >=1;=1)

NTPC PREVIOUS PAPERS

Some Technical Questions from Previous NTPC Exam

Technical Paper

1. Given four unit-circle plots identify the one corresponding to a bandpass filter.

2. A 4 kHz signal is sampled at thrice the Nyquist rate and sent through a channel with error ?1%. Calc the bandwidth of the channel.

3. Given a two port network in the form of a T find o/p admittance in terms of y-parameters.

4. Connect two 1? resistors in series, then connect two 1H inductors across one of the resistors such that the ckt looks like a 1? resistor in series with a ?-section of a resistor and two inductors. With the series resistance on the i/p side, calc the transfer function of this ckt

5. Inverse laplace transform of 1/s2[d/ds(e-3s/s)]

6. Lower useful input limit of a transducer is determined by…

7. Air-cored inductors are used for low frequency/high frequency/equal frequency operations.

8. Given 4 pole-zero plots identify which one corresponds to the driving point impedance of a series resonant ckt.

9. Expression for ?(n): u(n)-u(n-1)/ u(n-1)-u(n+1)/ u(n)+u(n+1)/…

10. The sequence (2,3,4,3) is circularly even/circularly odd/circularly zero/both circularly even and odd.

11. Z-transform of 3n u(n).

12. Match the following with their characteristics: LED/LCD/nixie tube/optical fibre.

13. Numerical on a photodiode: to calculate the responsivity/sensitivity when a specified no of incident photons cause a specified no of electron generation.

14. Given an op-amp ckt obtain an expression for o/p voltage.

15. No. of encirclements made about the origin of the nyquist plot of the open loop TF:1/[(s-1)(s+2)(s+3)].

16. For a radioactive sample which decays to 12.5% of its initial value in x days, the half life is given by____

17. For a repeater in a PCM cable identify the correct sequence of actions amongst threshold/equalization/etc.

18. O/P of a delta modulator when a ramp input is fed to it.

19. Steady state error with ramp i/p for a type-0 system.

20. Creeping occurs in energy meters bcoz….

21. Ultrasonic method of flow measurement cannot be used in liquids with air bubbles/has less attenuation in air compared to liquid-identify the false statement (if any) among these.

22. Major cause of losses in a fibre optic cable: dispersion/total internal refraction/presence of core and cladding/…

23. Which layer in the OSI model is concerned with printer buffering,etc: network/session/transport/…

24. Given some function F(j?) calc its inverse CTFT.

25. Relation between laplace and z-transform: s=z/ s=ln z/ s=( ln z/T) /…

26. Maxm and minm probability error among ASK,PSK,FSK,DPSK etc

27. Which of the following is a non linear modulation scheme: PAM/QAM/PCM/…

28. Match the following functions: e-t , e-t + et, sin(?t) with causal and stable system, causal and unstable system, etc.

29. Given a ckt with a 50 ? resistor in series between two voltage sources of 10 V and 5 V magnitude calc power delivered by 5 V source.

30. Laplace transform of e-3tu(t)+e2tu(-t).

31. Which photodetector has output affected by own intrinsic noise: PN/APD/PIN/all.

32. AC signal conditioning is used for inductive and capacitive/resistive/piezoelectric transducers/all of the above.

33. When I mode is added to proportional control system stability increases/ decreases/ steady state performance deteriorates/damping increases.

34. Reset control is another name for integral/derivative/proportional/…. Control.

35. Time response of system having transfer function 625/(s2+25) will be of the form…

36. Given some transfer function calc the peak response time.

37. The nyquist sampling rate of the function [sin(at)/t]2 will be…

38. The feedback topology that results in increased i/p and o/p impedance is current series/voltage series/current shunt voltage shunt.

39. Numerical on cardiac output calculation given heart rate and volume per beat.

40. In an ECG instrumentation amplifier the differential gain is provided by 1st stage/2nd stage/mismatched resistors/output stage.

41. Repeat ques 40 above for the classic 3-op amp instrum amplifier.

42. EMG signals are of the order of mV/V/?V/…

43. Computer assisted tomography is used for…

44. Numerical on electrostatic instrument, to calculate deflection given spring constant, torque etc.

45. To prevent loading of a ckt i/p impedance of a CRO should bee high/low/inductive/capacitive.

46. Addition of a zero to a 2nd order underdamped system results in increase/decrease of rise time and increase/decrease of peak overshoot.

47. For PI ctrl we obtain improved bandwidth/improved steady state performance/ worsened steady state performance/…

48. SNR of normal AM system is comparable/3 dB lower/3 dB higher/6 dB lower over DSB-SC and SSB system.

49. Which is an effective measure of the noise related performance of an amplifier: SNR/noise ratio/thermal noise/shot noise.

50. Given baseband signal freq and carrier freq calc which of the freq given will not be present for conventional AM.

51. Distinction between FM and PM at high frequencies.

52. Which of these has the least propagation delay RTL/ECL/I2L/CMOS.

53 Switching speed of CMOS is affected/unaffected by changes in supply voltage.

54. Which of these provides a measure of heart rate P/QRS complex/T/none of these.

55. Given a ckt of a logarithmic amplifier you had to identify what ckt was it.

56. JFET can operate in depletion/enhancement/both/none of the above modes.

57. When a BJT operates in saturation the junctions are fwd biased/reverse biased/…

58. BIBO stability criterion implies that poles are within/outside/on the unit circle.

59. For faithful amplification of low amplitude signals the cut-off/active/saturation regions of a transistor is used.

60. Lissajous pattern of a signal rotates 36 times per minute. if the oscillator frequency is 560 kHz then the unknown freq is…

61. % resolution of a 10 bit ADC.

62. To obtain 10 mV resolution on 5 V range how many bit DAC is to be used..

63. Why is LCD preferred to LED.

64. How will 0.6973 be displayed on 10 V range of a 4 ½ digit multimeter.

65. Which of the following cannot be used for an automatic feedback temp ctrl system thermocouple/thermometer/thermistor/IC sensor.

66. Y(n)=X(-n+3) is an example of a linear/non linear and shift variant/invariant system.

67. The falling body method is used to determine viscosity/humidity/….

68. Which of these methods of viscosity measurement gives greatest accuracy falling body method/rotating cylinder method/both/…

69. Some question on gas chromatography

70. A device having a rotor with 3 Y-connected coils and a stator is likely to be a synchro/RVDT/control transformer/…

71. In a twisted ring counter the initial count is 1000. after the 4th clock pulse its state will be….

72. A 240 kHz signal is given into a 3 bit binary ripple counter. The lowest o/p freq obtainable is….

73. For parity bit checking which of the following gates can be used XOR/NAND/OR/XNOR.

74. Why is a BJT called so..

75. Identify the expression for gauge factor of a strain gauge among the given options.

76. In a semiconductor strain gauge as tensile strain is applied what changes take place in the n and p areas..

77. How does a radioactive level gauging system work…

78. A capacitive transducer measuring level works on the principle of change in distance between plates/change in dielectric strength/…

79. For maximum power transfer in an AC circuit the condition to be satisfied is ZL+ZS=0/XL+XS=0/none of these/….where l and s refers to load and source respectively.

80. Find the transfer function from a block diagram.

81. Synchronous ctrs are preferred to asynchronous ctrs bcoz they are faster/glitches at the output can be avoided/both/none of these.

82. The lissajous figure formed on an oscilloscope looks like the English figure of 8. if the vertical channel input is 1 kHz the horizontal input freq is….

83. IE=IC for a transistor in saturation/cutoff/active/both saturation and active regions.

84. Reproducibility of measurements is called accuracy/precision/linearity/none of these.

85. Which of these is not strictly a static characteristic accuracy/precision/tolerance/linearity.

86. The shunt coil in a Q meter has resistance of the order of m?/?/k?/..

87. For measuring inductance of high Q coils the bridge used is Maxwell-wien/Schering/…

88. Which of these measures inductance in terms of capacitance Maxwell and hay/Maxwell and Schering/hay and Schering/…

89. In a flip-flop with preset and clear inputs both are applied simultaneously/clear is cleared when preset is applied/preset is cleared when clear is applied/….

90. What happens when the RET instruction is encountered by 8085

91. A 1024*8 memory chip needs how many address lines…

92. What happens when the PUSH instruction is encountered by 8051.

93. In FM relation between no of sidebands w.r.t. modulating freq

94. Numerical on DPSK.

95. A multiplexer accepts input data and provides one output all the time/one output at a time/many outputs at a time/many outputs all the time.

96. Pulse modulation is essentially a process of multiplexing/….

97. Wave shape is altered by clipper/clamper/voltage doubler/amplifier.

98. 4 signals of frequencies 100,100,200 and 400 Hz are sampled at nyquist rate and sent through TDM on a channel.the bandwidth of the channel is…

99. Superposition can be applied to a ckt with initial conditions/non-linear ckt/…

100. Kelvin’s double bridge is used for the measurement of…

101. Which of these is not an active transducer thermocouple/solar cell/RTD/none of these.

102. Oscillator using positive feedback has gain of 0/?/undefined value/…

103. Wien bridge oscillator should initially have closed loop gain >3/<3/=3/…

104. Some question on gain margin and phase shift of a system.

105. Fourier series expansion of even function has sine terms only/cosine terms only/no odd harmonics/…

106. Full wave rectifier gives clean dc o/p/dc o/p with small ripple/positive half and inverted negative half of i/p as o/p.

107. Which of these values of ? gives damped oscillations: 0/1/1.6/0.6

108. For a transformer of ratio 1:a and excited by a source V with impedances Z1 and Z2 on the primary and secondary side value of a for maxm power transfer should be..

109. Fourier transform of cos(?0t) is…

110. At t=0 the step response of a 1st order system is….

111. 555 can be used as a monostable/astable/freq dividing ckt/all of these.

112. In a PT when the secondary is open ckted with the primary excited what will happen.

113. If a system is marginally stable then the nature of oscillations will be…

114. Linear encoders mostly use straight binary/BCD/gray code.

115. For an accelerometer working in displacement mode the ratio of forcing freq to natural freq should be…..

It may Contain questions with options like Both a) and b) . While solving this type of Question we may get some difficulty, but practicing more we can overcome this difficulty. All the best and do more Practice.

Aptitude Paper (70 Questions):

Most of the Aptitude questions we get straightforward. This Paper contains questions involving profit and loss, ratio-proportion, DI from pie-charts, one RC passage and other questions from verbal. Here we have to concern the Verbal questions, which will be quite confusing, as none of the options seemed to fit the question.



NTPC  Previous Year Placement Paper 12 April 2009

Electrical Engineering

1. What is causal system?

2. Shunt reactor is used in EHV transmission line for

3. 20w, 40W, & 200w lamps are connected to three phases if neutral wire breaks then which lamp will fuse first? 1) 20 2)40 3)200 three lamps will fuse together.

4. Synchronous machine can be operated at both lagging and leading power factor

5 What does synchronous speed mean?

6. Frequency of emf generated per rotation of rotor is equal to.

7. DC machine having wave winding is wounded as lap winding what will be the effect on emf generated

8 Which is remain unchanged in transformer action?

9. In transformer windings are connected.?

10. In general how transformer is rated?

11. What is given on the name plate of motor? 1) KW 2) KVA 3) output shaft power

12. Short circuit test of transformer gives what?

13. Transformer core are laminated for what purpose?

14. What is supply voltage for heavy industry .1) 33KV 2) 11KV 3) 132 KV 4) 66KV

15. Basic structure SCR as a two transistor i.e. how they are connected?

16. What is Triac?

17. System admittance is (G+jB) what is reactive power absorbed if the voltage is V KV? (1) V (square)*B (2) V (square)*g .

18. In series R-L circuit what is phase difference between the voltage drop across R and L?

19. Power factor is cosine (delta ) delta is the angle between 1) phase voltage phase current 2)

Line voltage lone current 3) phase voltage line current 4) line voltage phase current.

20. Laplace of exp (-at)?

21. For series R-L-C circuit the load will be capacitive if the frequency is 1) greater than the resonant frequency 2) less than the resonant frequency 3).

22. In Wiens bridge which circuit elements determine the frequency range?

23. What is the output if two booster having duty cycle K and (K-1) are connected in series?

24. If a DC shunt motor is loaded from unloaded condition what will be effect of on terminal voltage?

25. A second wire system having one pole one right half of the s-plane. When the system will be stable?

26. A system having repetitive pole what will be effect on the gain at the cross over frequency?

27. Hollow conductor is used to reduce corona loss how does it reduce the loss?

28. In DC machine how voltage is related to flux?

29. Nature of current and voltage in the armature and at the terminal in DC machine.

30. Motor acts on the principle of ..rule

31. Which instrument measure both ac and dc?

32. How the rotation of induction motor is reversed?

33. If 3-phaseof a 3- phase balance load are reversed what will be the effect on the line current?

34. If the rating of VAR absorber is 50MVAR at 400KV. What will the VAR absorbed by the absorber at 300KV?

35. In regenerative breaking of DC series motor what is done?

36. Definitions of Fourier transform?

37. Laplace of f(t) is F(S) what is Laplace of f(t+T) .

38. Z-transform of sampled function x(n) for n>0.

39. Laplace transform of impulse function.

40. Z-transform of unity.

41. How many slip rings are there in 3phase synchronous motor?

42. How the speed of synchronous motor is controlled?

43. Speed control of induction motor?

44. When power supply is supplied to heater coil it glows while simple wire does not glow. Why?

45. A synchronous generator having inertia constant 4 and having rating of 100MVA. What will be energy stored by the machine?

46. A transformer having ratio 20:1. The secondary load is 0.6 ohm and the voltage across it is 6 V what will be the primary current?

47. A RC circuit having r=0.8ohm, c=2.5micofarad what will be the time constant?

48. Find load impedance if c=0.1 micro farad?

49. Two capacitors connected in series the equivalent capacitance is 0.03uf and when connected in parallel the equivalent capacitance is 0.16uf find out the ratio of the two capacitance?

50. An L-c circuit having frequency 1/sqrt (LC) what will the equivalent impedance?

51. An inverting op-am having input with resistance in series and a capacitance in feedback operates as a.?

52. A current having fundamental and third harmonics what will be the rms value of the current?

53. Peak to peak value of voltage if rms voltage is 100V.

54. Rms voltage.

55. What is the approx efficiency of nuclear power plant?

56. What is the average current of a single phase full wave rectifier firing at angle alpha?

57. What is the function of freewheeling diode?

58. When SCR stops conduction? (holding current)

59. For measuring current why shunt resistance is used?

60. For economic operation of plant what is the condition?(taking into account the penalty factor)

61. Incremental fuel cost of two plants is given and a load is given. Find out the load sharing for economic operation of the plant?

62. A two port network is represented by ABCD parameters. What will be condition for the two port network to be symmetrical?

63. Size of the conductor is determined by .

64. Which Surface is suitable for grounding?

3. What methods are fired during the page load?
Init() – when the page is instantiated,
Load() – when the page is loaded into server memory,
PreRender() – the brief moment before the page is displayed to the user as HTML,
Unload() – when page finishes loading.

4. Where does the Web page belong in the .NET Framework class hierarchy?
System.Web.UI.Page

5. Where do you store the information about the user’s locale?
System.Web.UI.Page.Culture

6. What’s the difference between Codebehind=”MyCode.aspx.cs” and Src=”MyCode.aspx.cs”?
CodeBehind is relevant to Visual Studio.NET only.

7. What’s a bubbled event?
When you have a complex control, like DataGrid, writing an event processing routine for each object (cell, button, row, etc.) is quite tedious. The controls can bubble up their eventhandlers, allowing the main DataGrid event handler to take care of its constituents.

8. Suppose you want a certain ASP.NET function executed on MouseOver overa certain button. Where do you add an event handler?
It’s the Attributes property, the Add function inside that property. So btnSubmit.Attributes.Add(“onMouseOver”,”someClientCode();”)

9. What data type does the RangeValidator control support?
Integer,String and Date.

10. Explain the differences between Server-side and Client-side code?
Server-side code runs on the server. Client-side code runs in the clients’ browser.
11. What type of code (server or client) is found in a Code-Behind class?
Server-side code.
12. Should validation (did the user enter a real date) occur server-side or client-side? Why?
Client-side. This reduces an additional request to the server to validate the users input.
13. What does the “EnableViewState” property do? Why would I want it on or off?
It enables the viewstate on the page. It allows the page to save the users input on a form.
14. What is the difference between Server.Transfer and Response.Redirect? Why would I choose one over the other?
Server.Transfer is used to post a form to another page. Response.Redirect is used to redirect the user to another page or site.
15. Can you explain the difference between an ADO.NET Dataset and an ADO Recordset?

· A DataSet can represent an entire relational database in memory, complete with tables, relations, and views.

· A DataSet is designed to work without any continuing connection to the original data source.

· Data in a DataSet is bulk-loaded, rather than being loaded on demand.

· There’s no concept of cursor types in a DataSet.

· DataSets have no current record pointer You can use For Each loops to move through the data.

· You can store many edits in a DataSet, and write them to the original data source in a single operation.

· Though the DataSet is universal, other objects in ADO.NET come in different versions for different data sources.

16. Can you give an example of what might be best suited to place in the Application_Start and Session_Start subroutines?
This is where you can set the specific variables for the Application and Session objects.
17. If I’m developing an application that must accommodate multiple security levels though secure login and my ASP.NET web application is spanned across three web-servers (using round-robin load balancing) what would be the best approach to maintain login-in state for the users?
Maintain the login state security through a database.
18. Can you explain what inheritance is and an example of when you might use it?
When you want to inherit (use the functionality of) another class. Base Class Employee. A Manager class could be derived from the Employee base class.
19. Whats an assembly?
Assemblies are the building blocks of the .NET framework. Overview of assemblies from MSDN
20. Describe the difference between inline and code behind.
Inline code written along side the html in a page. Code-behind is code written in a separate file and referenced by the .aspx page.
21. Explain what a diffgram is, and a good use for one?
The DiffGram is one of the two XML formats that you can use to render DataSet object contents to XML. For reading database data to an XML file to be sent to a Web Service.
22. Whats MSIL, and why should my developers need an appreciation of it if at all?
MSIL is the Microsoft Intermediate Language. All .NET compatible languages will get converted to MSIL.
23. Which method do you invoke on the DataAdapter control to load your generated dataset with data?
The .Fill() method
24. Can you edit data in the Repeater control?
No, it just reads the information from its data source
25. Which template must you provide, in order to display data in a Repeater control?
ItemTemplate
26. How can you provide an alternating color scheme in a Repeater control?
Use the AlternatingItemTemplate
27. What property must you set, and what method must you call in your code, in order to bind the data from some data source to the Repeater control?
You must set the DataSource property and call the DataBind method.
28. What base class do all Web Forms inherit from?
The Page class.
29. Name two properties common in every validation control?
ControlToValidate property and Text property.
30. What tags do you need to add within the asp:datagrid tags to bind columns manually?
Set AutoGenerateColumns Property to false on the datagrid tag
31. What tag do you use to add a hyperlink column to the DataGrid?
<asp:HyperLinkColumn>
32. What is the transport protocol you use to call a Web service?
SOAP is the preferred protocol.

33. True or False: A Web service can only be written in .NET?
False
34. What does WSDL stand for?
(Web Services Description Language)
35. Which property on a Combo Box do you set with a column name, prior to setting the DataSource, to display data in the combo box?
DataTextField property

36. Which control would you use if you needed to make sure the values in two different controls matched?
CompareValidator Control
37. True or False: To test a Web service you must create a windows application or Web application to consume this service?
False, the webservice comes with a test page and it provides HTTP-GET method to test.
38. How many classes can a single .NET DLL contain?
It can contain many classes.

Series 2

1.Explain the .NET architecture.
2.How many languages .NET is supporting now?
- When .NET was introduced it came with several languages. VB.NET, C#, COBOL and Perl, etc. The site DotNetLanguages.Net says 44 languages are supported.
3.How is .NET able to support multiple languages?
- a language should comply with the Common Language Runtime standard to become a .NET language. In .NET, code is compiled to Microsoft Intermediate Language (MSIL for short). This is called as Managed Code. This Managed code is run in .NET environment. So after compilation to this IL the language is not a barrier. A code can call or use a function written in another language.
4.How ASP .NET different from ASP?
- Scripting is separated from the HTML, Code is compiled as a DLL, these DLLs can be executed on the server.
5.Resource Files: How to use the resource files, how to know which language to use?
6.What is smart navigation?
- The cursor position is maintained when the page gets refreshed due to the server side validation and the page gets refreshed.
7.What is view state?
- The web is stateless. But in ASP.NET, the state of a page is maintained in the in the page itself automatically. How? The values are encrypted and saved in hidden controls. this is done automatically by the ASP.NET. This can be switched off / on for a single control
8.Explain the life cycle of an ASP .NET page.9.How do you validate the controls in an ASP .NET page?
- Using special validation controls that are meant for this. We have Range Validator, Email Validator.
10.Can the validation be done in the server side? Or this can be done only in the Client side?
- Client side is done by default. Server side validation is also possible. We can switch off the client side and server side can be done.
11.How to manage pagination in a page?
- Using pagination option in DataGrid control. We have to set the number of records for a page, then it takes care of pagination by itself.
12.What is ADO .NET and what is difference between ADO and ADO.NET?
- ADO.NET is stateless mechanism. I can treat the ADO.Net as a separate in-memory database where in I can use relationships between the tables and select insert and updates to the database. I can update the actual database as a batch.
Posted in: Interview Questions asp.net | Tags: interview questions and answers questions interview answers q&a .net c# c sharp asp.net rangevalidator codebehind culture page load aspnet_isapi aspnet_wp.exe

PRINCIPLES-OF-MANAGEMENT

SOLUTIONS

Hello friends, i’m Vikash Kimothi from College of Technology, PANTNAGAR, BEL visited my college on 19th-20th sept’08 for recruitment. Their selection procedure consist of 2 stages —– written(technical) and interview. THey have differnt written paper for electronics, computer & mechanical engg cadidates.I’m from ECE and the wriitten test consists of general questions most of them from communication & digital logic families. The cut-off for the written examination was 30%. After clearing the written i face the  interview. Interview panel comprise of 5 members from electronics, computer, mechanical & HRD field. MOst of the question asked in the interview were simple like some electronics principles and their applications.

They ask mainly questions from communication–analog & digital and also ask for the principle/working of some equipment like CFL, electronic fan regulators, DTH service/satellite tv, mobile phone, IP tv etc…

Here i have given some of the questions of the written paper(ECE)… The paper consist of two sections —-40 objective & 10 true false questions. The cut-off as told by them 30% but they may have increase this limit. in my college only 8 out of 21 cleared the paper(for ECE branch)

Part I—Objective questions (40 with 1.5 marks each) with 50% -ve marking

1. Numerical problem based on modulation index fc, fm………. (formula based direct queston).
2.Poles & zeroes are at .01,1,20,100……  find phase margin/angle at f=50Hz.       ans -90(By drawing bode plot)
3.In n-type enhancement mode MOSFET drain current———– options are- increase/decrease with inc/dec in drain/gate voltage.  ans(d)
4. Gain of an directional antenna 6db P=1mw find transmitted power………(use Ptr= G * P.)
5.Multiplication of two nos 10101010 &  10010011 in 2′s complement form..
6.A ckt is given suppplied with 15v with a series of resistance of 1k and a parallel combination of 12V zener diode and 2k resistance. FInd current through 2k resistance.      ans: 6mA
7.A MP has 16 line data bus & 12 line addr bus find memory range……….Ans..4K(4*1024bytes)
8.Divide by 12 counter require minimum ….. no of flip flops         Ans. 4
9.Storage time in p-n junction.
10.Succesive approx. use in ….         Ans ADC(analog to digital)
11.Pre-emphasis require in ……… low freq/high freq signal.
12.Handshake in MP ………..  Ans to communicate with slower peripherals.
13. Binary equivalent of 0.0625      Ans. 0.0001
14.Which code is self complement of itself
15.Excess three code of an given binary no.
16.When we add 6 in BCD operations…….  Ans. if result exceed valid BCD nos.
17.Shottky diode has better switching capability because it switch between…….
18.Figure of Merit is same as……
19.Swithcing in diode happens when….
20.During forward bias majority charge conc. in depletion layers inc/decrease…..
21.Channel capacity depend on…….    Ans. Usable frequency or bandwidth
22.A 2kHz signal is passed through an Low pass filter having cut-off freq 800Hz o/p will be
23. Carrier amplitude 1v,  peak to peak message signal 3mv find modulation index.
24.A 12V signal is quantized into two V/14 & 6 equal V/7 determine quantization error.

Part II True & false…...(10 1 mark each) with 50% -ve marking
1.Power dissipation in ECL is minimum………. False
2.Fourier Transform of a symmetric conjugate function is always real …. True
3.Divide by 12 counter requires a minimum of 4 flip flops…….True
4.Boron can be use as impurity to analyse base of a npn transistor…….True

ALL THE BEST…..

BEL PAPER ON-13th MAY

Hi friends, i had given BEL paper on may-13,2007
in which 150 ques u’ve to do…out of which 30 were of apti &120 technicalapti 9 ( tough as compared to ISRO)
question from analog electronics, digital electronics, network, F & W, signal , Control etc……..

1)  in analog question based on zener diode

2) coupling capacitors and bypass capacitors affect

3) 1,8,27,64,125, ……….,…….
which among the following will not come in the series
a.1000,  b.729   c.259

4) which of the following game uses bulley
a.football  b.cricket   c.goalf..  d.hockey

5) a zener diode works on the principle of

6)under the high electric field,in a semiconductor with increasing electric field

7)in an 8085,microprocessor system with memory mapped I/O

8)built-in potential in a p-n jn.-

9)the breakdown voltage of a transitor with its base open is BV(ceo) and that with emitter open BV(cbo) then

10) ques based on half adder

11) based on flip flop

12) block diagram reduction

13) to find max overshoot (2 ques based on it)

]]> http://freshersblog.wordpress.com/2008/11/05/bel-placement-paper/feed/ 0 Common wealth games http://freshersblog.wordpress.com/2008/11/05/hal-placement-paper-exam-questions/ http://freshersblog.wordpress.com/2008/11/05/hal-placement-paper-exam-questions/#comments Wed, 05 Nov 2008 19:28:20 +0000 Common wealth games http://freshersblog.wordpress.com/?p=17 ]]>

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Technical:
1. what is used for heat dissipation in ICs
2. for an amplifier, given IC(dc) and IC(ac)(p) for a 1k load calculate avg dc
power dissipated.
3. given hfe calculate hfc.

4. given ICBO,ICO and α calc ICEO.

5. for common collector configuration o/p current is IE/IC/IB/..
6. which configuration amongst CC/CE/CB gives no current gain.
7. SiC is which group compound
8. pipelining is implemented in RISC/CISC/…
9. given transmitted power and modulation % for AM calc avg sideband power.
10. spectrum of sinewave contains how many components.
11. which of the following signals supports snoopy cache protocol arbitration
signal/cache support signal/…
12. for an n-bit multiplicand and multiplier the booth,s algorithm generates
how many bit product.
13. which window achieves smaller sidelobe width at the cost of greater
mainlobe twidth hamming/hanning/Blackman/Kaiser 

14. a highpass RC filter behaves as
pure differentiator when ωτ<<1/ωτ>>1/…
15. what is the lowest atomic concentration that can be measured using SIMS
boron concentration method.

16. what type of bond is present in Si and Ge.

17. dynamic characteristics of capacitive transducers are similar when used as
HPF/LPF/…

18. what is used as switching element in SMPS at 20-100 kHz
UJT/thyristor/triac/MOSFET.
19. how can CMRR be increased-by increasing source resistance/emitter
resistance/collector resistance/..
20. avg value of a HWR current signal of peak value Im.
21. given 3 dB bandwidth and resonance freq of an RLC ckt calc its Q.
22. how many tokens are present in C- 0/1/2/3.
23. for a stretch of code as int a;a=5/2; what will be the value stored in a.
24. what does the statement volatile int a mean in C.
25. ASCII code of Z.
26. for a stretch of code as char a =252;a=a+5; what is the value stored in a.
27. one problem on binary to hexadecimal conversion.
28. 212 address lines address how much memory.
29. 220 address lines address how much memory 2G/2M/…
30. another name for single transfer mode in direct transfer.
31. what signal used for DMA in 8085.
32. sequence of instruction cycles for PUSH B.
33. what are the various steps in one machine cycle of 8085.
34. response time of PIN diode.
35. range of current signal in RS232 serial transfer mode.
36. when an electron is injected into a circular conductor surrounded by an
insulator what will happen- it will distribute uniformly/move to the surface/…
37. for a solenoid with end A connected to +ve terminal and end B to –ve
terminal what will happen end A will be north pole/end B will be north
pole/both will alternately be north poles/it won’t behave as a magnet.
38. what is the value stored in an un-initialized static variable in C.
39. what transistor is used in VLSI.
40. number of gates used in GSI.
41 supply voltage in HTL logic.
42. given a K-map,obtain a simplified SOP form.
43. 2’s complement of –ve 1011.
44. 2’s complement of another binary number.
45. why are synchronous ckts difficult to design –they have fast response/they
have stability problem/…
46. given 4 equations identify which conforms to Boolean algebra laws.
47. when lower byte is used to address MSW what is it called big endian/little
endian/…
48. a 6 V peak sine wave is given to one of the inverters
of a 7414. after what value will the o/p change from high to low.
49. given two sequences,calc their product.
50. given two sequences find their convolution.
51. find the ROC of a right sided exponential sequence.
52. the property x(t)*h(t)=h(t)*x(t) is called commutative/associative/distributive/…
53. given the sequence y(n)=5cos[4πn/31 + π/5] find the fundamental period of
it.
54. in what type of control is hysteresis present -P/I/D/on-off.
55. given mmf and reluctance, calc flux.
56. max no of peripherals that can be connected to 8085 through a PIC.
57. why is class B modulation preferred to class C modulation.
58. given a telemetry channel in which a 4 kHz bandwidth signal is carried by
two carriers of 36kHz and 48 kHz calc the freq bands occupied.

59. LVDT is a electrostatic/electrical/electromagnetic/electromechanical
device.
60. order of resistance of shunt coil used in Q-meters.
61. what are the minority carriers in an n-type material.
62. the band formed when energy associates combine with valence electrons is…
63. depletion region width can be increased by…
64. minority carrier concentration depends on applied fwd voltae/applied
reverse voltage/doping level/…
65. numerical on calc of drift velocity of an electron.
66. maxm power consumption occurs in electrostatic/hotwire/induction/moving
iron instrument.
67. for a collector modulated AM ckt given values of L & C of the tuning
ckt and the message signal freq calculate the freq spectrum of the AM wave.
68. upon which of the following plots can the Nyquist plot be mapped-bode/root
locus/polar/inverse polar.
69. which of the following compensators increases the damping factor-phase
lead/phase lag/phase lag-lead/phase lead-lag.
70. for regenerative feedback having fwd path gain G(s) and f/b path gain H(s)
calc the transfer function.
71. which is true about the wagner earthing device-it reduces waveform
errors/introduces high accuracy in measurement/does not affect AC
bridges/changes the freq of measurement.
72.  a 2nd order LTI system acts as which of the following-HPF/LPF/BPF/..
73. which of the following adds linearly-Ls in series/Cs in series/Rs in
parallel/..
74. relation between mobility and diffusion constant.
75. at 308K value of Eg for Si.
76. what indicates the efficiency of transport
of electrons injected from the emitter into the collector by the base-base
transport factor/base injection factor/…
77. error detection can be achieved by potentiometer/amplidyne/armature
controlled/field controlled AC motor.
78. which of the following can act as an input to an AC
bridge-RPS/oscillator/amplifier/…
79. if some i/p voltages are to be added without changing their values in an
op-amp having f/b resistance as 1k, the i/p resistances should be..

80. given ρ,l and d for a copper wire,calc its resistance.
81. if the length of a wire is increased what happens to its
resistance-increases linearly/increases exponentially/…
82. for a current carrying coil if the current is doubled then the field
strength is doubled/halved/increased 4 times/..
83. some value of L and C is connected to a 150V,60Hz source. What value of
inductor will make the same current lag behind the same voltage with the same
capacitor.
84. loss due to dielectric distortion ina capacitor is called…
85. for an ideal MOS capacitor if the gate voltage is less than 0 it behaves in
what mode..
86. given a ckt with a parallel combination of a 1 F capacitor and a (1Ω
resistor and 0.5H inductor in series) excited by a source of value cos t, calc
the current given by the source.
87. anti-side tone ckts are used in telephones to introduce/eliminate/attenuate
sidebands.
88. in a radio receiver noise occurs in the mixer/oscillator/amplifier/…
stages.
89. for a 4k RAM with starting address 4000H the last address will be…
90. RST 5.5 is vectored to which address
91. among RST 5.5/6.5/7.5 which is serviced last.
92. a capacitor of some value is charged thru a resistor of some value and a 6
V battery. Calc the time taken by the capacitor to charge to its maxm value.
93. given an eqn for FM, identify the carrier freq.
94. how many invalid states are present in a mod-6 counter.
95. when ckts are connected in tandem which method is easier to analyze them-h
parameters/OC impedance parameters/transmission parameters/SC admittance
parameters.
96. from a 75 MHz counter what is the value of the smallest time period of the
signal that can be obtained.
97. Cgd for a FET in the small signal low freq model is in the range of…
98. kirchoff’s law is not applicable to which of the following
ckts-nonlinear/dual/linear/distributed parameter.
99. why is a diac preferred to turn on a triac-for slower turn-on/faster
turn-off/better stability/…
100. resistance of the epitaxial layer depends on…
101. which of these is an active transducer-photoconductive/photovoltaic
cell/selsyn/…
102. DC blocking in a transistor is achieved by…..
103. what current is drawn by a 10 W lamp connected to a 220 V,60 Hz source.
104. noise margin of CMOS is 0/infinite/high/medium…
105. schotky barriers are frequently used as…..
106. octave freq range is represented by….
107. i/p impedance of a digital
instrument is of the order of….
108. what is the time taken to multiply a 14 bit no. with a 1 MHz clock.
109. parity error checking identifies error occurring in 1 bit/2/3/4 bits only.
110. when RESET IN(active low) is affected in an 8085 what happens.
111. how many times will a for loop going from 20 to 100 in steps of 10 be
executed.
112. if the control statement is made outside the body of a function in C what
is it called.
113. which of the following can be a variable in C-8ab/total
salary/gross_salary_2008/net__income__2008.
114. if the units of both current and voltage are increased 20 times of their
present value how will the units of capacitance change.

115. what type of non-linearity is present in a servomotor-backlash/coulomb
friction/dead space/…
116. given the i/p signals to a differential amplifier calc its o/p voltage.

Aptitude:  

There were 36 questions in this
section, about 12 questions each in verbal,quant and GK. some of the GK
questions were:

Author of “the great Indian story”.

Author of ”making globalization
work”.

Captain of the 2006 world cup
winning  italian football team.

Full form of the acronym CITES.

Period of the fourth five-year
plan.

In which year did the turks conquer
Constantinople .

Some of the questions asked are given below for your
reference.
1. In which place there are No snakes?
Ireland and
also Hawai island.
2.In a class there are 35 students in which its average is 35kg, if we add ten
more students in    that class their average becomes 39kg.
What’s the average of new ten students? 53kg.
3. She swam ­___ Cauvery river ___ India and Srilanka.
Across and between     
4. How much months will be allowed for a women employee to take leave on
Maternity period? 26 weeks.
5. If  “A” sells an article to “B” in the profit of 20% and “B” sells the
same article with loss of 10% to “C” and gets rs.216. What is the cost of that
article? 200
6. 8900 is divided to the share profit to 3 persons X, Y and Z with less rs.30,
rs.20, rs.50 respectively. If the ratio is divided to 2:3:5 respectively. How
much is the share for Y?
7.Two alloys Copper and steel is in the ratio of 5:7 and 4:5 respectively. If
it melts to ________________________ in the equal ratio. Percentage?
8.Second highest Muslim population in which country?

 9.
Praveen runs 125m or 25 seconds lead in 1000m race. Though he lost with Naveen
in just a distance. How much time Praveen takes to cover the distance?
200seconds

 HAL PAPER ON 3rd NOVEMBER AT NEW DELHI

Hi good morning to all of u. I am from ELECTRICAL I am ag. on 3rd august i
attended the HAL exam. thats very very easy.Just they are concentrating on only
3 to 4 subjects. If u are red those subjects then u will be luckiest fellow.
but what i know from the exam is they are mainly concentrating on particularly
one subject i.e. DC Machines. 

On 3rd they asked three subjects i.e. DC Mchines, Networks, Measurements and
Instrumentaion.
Total Q paper contains 160 bits. out of 160

20-bits  English  -  average
20-bits  Aptitude and G.K – average
40-50 bits DC Machines – easy
20-30 bits Networks
20-30 bits M&I
5-10 bits are from trnasformer and remainning from 5 from PS 10 from
remaining Machine.

All these bits are easy but these some calculations. so please friends
whatever u know that only first u attempt in that u will get more marks.
For us this is ONLINE.

In my point of view exam was easy. I had written very well also.
now this is ur turn to prepare.
ALL THE BEST FRIENDS

Hi every body…today i gave HAL written test in hyderbad in ELECTRONICS
branch there are 145 technical questions and 15 general studies the very very
very very very important thing for those who apearing for HAL exam in
electronics is they are given most of the questions from DC MECHINES nearly 50
quetions from that subject today i was shocked to see ques’s from that
subject,so pls concentrate more on dc mechines.

mostly they are given questions from these subjects
1.dc mechines(about 50)
2.Networks(20)
3.instruments(5)
4.digital electronics(30)
5.EDC & analog electronics (8)
6.control systems(2)
7.antenas,satillite commincation(5)
8.communications(10)
the paper is very hard i dont expect they will give question patern like this
so plz concentrate more on mechines
some of questions i feel easy and i remember are 
1.what is weight of 5rupee coin??
2.who is below never a cheif justice of india ?
3.what is largest ISRO company in india?
4.who is player took 10 wikts in one test innings ?
(in the list anil kumble not given) 

techinical que’s:
1.binary number for 1001.1101?
2.decimal number for 19?
3.excess-3 code for 29?
4.speed-torque characterictics of dc motor?
(some figures given)
5.quantization noise occurs in??(repeated question 2 times given)
6.schering brige method used for measuring of??
7.prom based on networks are very very easy every body can ans…like calculate
curent in one resistor if  10 resistors are connected in parall like that
8.if speed doubles,distance increases what is the torque in dc motor?
9.what is the value of  A’+1 ?
10.what is instrument used in MIC instrument?
 a)galvonometer b)ammeter like that….
11.question about dammping concept in PMMC
12.what is PAL full form??
13.what is the use for sweeping resistor in transistor??
14.quetion based on bootstraping concept.
15.rms current in half wave rectifier?
16.what is form factor?(some ratios are given)
17.prob on tree branches concept
18.range of radio telemetry…some frequencies given
so these are questins which are very very easy and i remembered
dont feel happy to see these questions in every exam these type easy questins
they will give but
who gave corect answers to difficult questions he only will select in written
test.so do hard work better to learn concept clearly now a days this galgotia
book also not useful for p.s.u’s
prepare test books more…..

HAL PAPER ON MAY 20th AT HYDERABAD
 

1 synchro tc and rx is

a )   two phase ac

b)    three phase ac

c)    dc only

d)    none

2 in 4 bit number one bit indicates
sign of the number then the locations are from

a)      -8 to 8

b)      -7 to 7

c)     
-16 to 16

d)     
None

3  G(s) = 10/S(S+2) then the
natural frequency of this transfer function is

a)     
3.146

b)      4

c)      5

d)      2

4  In TV video amplifier is
used for  =?

5) one block  contain one of
the R L C element then the frequency of that one is 1 MHZ when the capacitor C=
0.1 uf is added to that block then the frequency becomes 2 MHZ then what is the
element inside the block at first time

a) resistor

b) inductor

c) capacitor with 0.5 uf

d) none of these

ans : b

6) For unit step input they gave
the input G(S)= – — – - -,h(s)= ——-then he ask the steady state error for
that transfer fn

7)Avalanche photo diode is used
when compared to PIN diode bcz

 a) larger band
width      C)——-

 b) high
sensitivity          d) ——–

8)  some non zero DC voltage
is      to RC low pass circuit then the DC voltage in
the output contains

a)     
Same as in input

b)     
Higher than  input

c)     
Zero

d)     
Slightly increases

9) ifthe output of the gate is always high then the gates applied to this logic
are

a)     
NAND and EXOR

b)     
Nand and NOR

c)     
AND and XNOR

d)      OR
and XOR

Ans ) a

10) For the voltage series feedback
he gave input resistance and A  and beta value then find the output
resistance ?

11)Signal to noise ratio =15 db
Bandwidth =4KHZ then the channel capacity -?

Ans
:               
C= B Log (1+ s/n)   =16 log 2

12 ) Four  messages are given like this 0.5,0.25,0.125,0.125 ,entrophy
value is =?

Ans:         
Entrophy= Avg of all informations

13) Thermal Run away is not
possible in FET bcz the flow of

a)     
minority careers        c) _____

b)     
Transconductance      d) none

Ans : FET is unipolar so there are
no minority careers .Thermal run away occurs only minority careers

14)Gm= 10 ,Rd =20k,Rl =10 find the
amplification factor -=?

Ans =  U= Gm
Rd

15)  Two ideal voltage
sourd=ces resistors are connected in series ,power of that one is 4W ,If one of
the sorce is active other resistors are shorted .Calculate the power when both
are active +/

a)     
0W,8W

b)     
8W,6W

c)     
4W,0W

d)     
None

16)   A TV braod cast tx
uses which type of antenna =?

a) parabolic antenna b)=—

c)—–   d) —–

ans : a

17)   Electric field and
equi potential lines are

a) parallel to each other

b) In Quadrature

ans : b

18 ) L1= —– , L2 =  —- k= _—- then mutual inductance of the coil is
=?

Ans :    M=ksquare
root of L!and L2

19 ) one cube some is there to find
out the how many number of cubes are having single side ?

20)Two qs in verbal are
—– two statements are given for that the relation btwn those two

Totally there are 160 qs out of
that 100 qs from technical and 60 qs from aptitudeand verbal

MTNL (JTO/JAOS) EXAM —-HELD ON 18/09/2005.

5 123456:234556 345678:???

there were 170 q,s ,out of which 100 technical and 70 counts for

aptitude.

time limit was 2 hours. 30 minutes were previusly given for filing the

entry.exam stared around 10 o clock.

*there were no g.k question

note—–>>>

*approx 10 question were also in sail 2005 examination(management

trainees)

$——-> repeated

*few q which i remembered,

i have written them according to the nearest topic

*technical was having almost thoeritical question nearly.

********technical section************

1.what is a aquadag.

2.about the quiscent condition

3.cassegrain feedis used with parabolic reflector to

allow the feed convenient position. $

4. configuration of cascade.

ce cc,cbce, none

5.resistors is measured in a) ohms

b) watts. c) both

6.if diameter of radar is >> 4 times $

how much range is increased ans)4

7.n type have which type of impurity

8.semiconductor strain gauge over the normal strain gauge is around.$

9.why slicon is prefeered

10. what is w2/w1=4 relationship is called $

11.which one is best outof(near about)

nyqiust,bode, routhz

12.wein bridge frequecy conditions

13.The ,h, parameter equivalent circuit of a junction transistor is

valid for -

a). High frequency, large signal operation

b.) High frequency, small signal operation

c.) Low frequency, small signal operation

d). Low frequency, large signal operation

14. comparater is used for?

15. astable and bistable uses

16. to increase input z u will prefer

a). Current series feedback

b). Current shunt feedback

c). Voltage series feedback

d). Voltage shunt feedback

17.. Enhancement type P channel MOSFET the gate voltage is

+,-,+ &-

18 which gate gives 0 when i/p is 1

19. decimal have radix ?

20 what is binary for 10

21 one value was given SN72 like that ,u have to tell

which device it means.

22. what does the sync mean in tv tramnsmission. $

23. question on transformer coupling(i didnt remember)

24. where the double tunning is used in radio receivers.

25. sequential circuit dependence on input and output.$

26.question on power receiveed by the receiver in tramsmmission

27.the probability density function of envelope of narrow

band noise is gaussian………………………….

28. what isthe output of given IC .

29.if quantization level is incresed from 8—>9 then what is the

effect

30. a figure was given and we have identify thec circuit.

31.in closed loop if u are having m=100 and negative feedback

is .04,what is gain

32.k maps was given u have to give the right pairings.

33.a question on bandwidth

34.fourier series coprises of

sine,cosine,both

35.stalites works in which frequency $

vhf,uhf,both

36.by which u can prepare a binary counter. $

d,rs,jk,latch

37.q based on use of schotky diode

38. q based on the use of varactor diode.

39.q based on allignment in paramagnetic materials.

40.which equipment uses minimum power.

41. it both input of nand gate is high,give the o/p.

42.how many bits are required to reepresent 35 in binary.

43.what is CMRR.

44.if current in zener is increased then what happens.(near about).

45.for,thermistor if temperature is increased then then temperature

coefficent

will?

46.relation between B(beta) and Ic in bjt

47.the resistance of loudspeaker is nearly

ohms,k ohms,m ohms,

48.early state in bjt is due i/p applies,

on time,off time,….

*****aptitude section***********8

aptitiude q

antonymns of

1. debonair

2.bafeful

3.exasperate.

4.dainty

5.epolsive

6.a very simple passage followed by 5n scoring q,s

7.5 question to pick the wrong part in sentences

maths part

1.work… time taken by 4 men to do work is 98.if 3 more

person are involved they the will finsh the work of 298 hrs

in how many more days

2. dicount offered by 3 shopownwer

15 and 10

20 and 10

36

which is the most discounted

3.15^3-14^3/15^2+210+14^2 solve it

4. (312)^.5 * (201)^.5 solve it

5.radius of 2 circle and revolution of one was given,find the other

6. 7 know french ,8 know german ,3 know none ,find how many know both.

7. 80 %failed in maths, 70 %in english ,10 % failed in both,total

passed

no is 144.find total strength.? $

8.if watch is always makes error of 4 second (+)/hours,what will be

time on 22 day 8 am when it was last corrested on 21 day 1 pm

9 q based on day of birth ?

analytical

1. cube face q(same of any two side is 7) $

2. relationships based simple q .(8 in no in total)

3. dog:caninne governor: ??? $

4. 0,6,24,36,120,312(approx likethat) what should not be there $