electrical engineering MCQs – Page 152

Practise multiple-choice questions from electrical engineering for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

electrical engineering Mcqs
1. economics of power generation2. analog electronics3. solid state switching circuits4. parallel circuits5. switchgear and protection6. op amp circuits7. transistor audio power amplifiers8. electrostatics9. heating and welding10. multi stage transistor amplifiers11. passive filters12. network theorems13. regulated d c power supply14. a c fundamentals circuits and circuit theory15. electromagnetic induction16. power electronics17. magnetism and electromagnetism18. transformers19. modulation and demodulation20. d c generators21. semiconductor theory22. single phase induction motors23. semiconductor diode24. hybrid parameters25. digital electronics26. oscillators27. earthing or grounding28. single stage transistor amplifiers29. d c motors30. transistor biasing31. amplifiers with negative feedback32. basic electrical33. electronic instruments34. synchronous motors35. field effect transistors fet36. magnetic circuit37. control systems38. industrial drives39. power generation40. series parallel circuits41. transistor tuned amplifiers42. electrical engineering materials43. rectifiers and converters44. integrated circuits45. scr silicon controlled rectifiers46. cables47. polyphase induction motors48. measurement and instrumentation49. transistors50. electrical machine design51. electrolysis and storage of batteries52. electric traction53. transmission and distribution
3021. A car is raining at a constant speed of 50 km/h, which of the following is the feedback element for the driver ?
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A. Steering wheel

B. None of the above

C. Eyes

D. Needle of the speedometer

E. Clutch

3022. A voltage follower _____________?
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A. has no feedback resistor

B. has a voltage gain of 1

C. is noninverting

D. has all of these
3023. _________ locomotive has the highest operational availability?
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A. Steam

B. Diesel

C. Electric
3024. The transient response of a system is mainly due to________________?
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A. stored energy

B. friction

C. internal forces

D. inertia forces

3025. A sensitive galvanometer produces large deflection for a_______________?
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A. large value of current

B. large value of power

C. small value of current

D. large value of voltage

E. none of the above

3026. The common-mode gain is ________________?
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A. always unity

B. very high

C. very low

D. unpredictable

3027. Induction type single phase energy meters measure electric energy in_______________?
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A. VAR

B. kWh

C. kW

D. Wh

E. None of the above

3028. An induction meter can handle current up to_____________?
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A. 10:00 AM

B. 60 A

C. 30 A

D. 100 A
3029. The first order control system, which is well designed, has a_______________?
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A. negative time constant

B. small bandwidth

C. none of the above

D. large negative transfer function pole
3030. In an open loop control system____________?
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A. Only system parameters have effect on the control output

B. None of the above

C. Output is independent of control input

D. Output is dependent on control input

3031. The household energy meter is_______________?
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A. none of the above

B. an indicating instrument

C. a recording instrument

D. an integrating instrument
3032. Systematic errors are_________________?
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A. observational errors

B. environmental errors

C. instrumental errors

D. all of the above
3033. __________________can be extended to systems which are time-varying ?
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A. State model representatives

B. Transfer functions

C. Root locus design

D. Bode-Nyquist stability methods

3034. An amplidyne can give which of the following characteristics ?
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A. Constant current as well as constant voltage

B. Constant voltage

C. None of the above

D. Constant current, constant voltage and constant power

E. Constant current

3035. Addition of zeros in transfer function causes which of the following ?
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A. Lead-compensation

B. None of the above

C. Lead-lag compensation

D. Lag-compensation
3036. With feed back ____________ reduces?
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A. system gain

B. system stability

C. none of the above

D. system stability and gain

3037. When a capacitor was connected to the terminal of ohmmeter, the pointer indicated a low resistance initially and then slowly came to infinity position. This shows that capacitor is____________?
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A. all right

B. faulty

C. short-circuited

3038. A control system with excessive noise, is likely to suffer from_______________?
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A. vibrations

B. loss of gain

C. oscillations

D. saturation in amplifying stages
3039. In majority of instruments damping is provided by______________?
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A. fluid friction

B. spring

C. eddy currents

D. all of the above

3040. In differential-mode, ______________?
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A. the gain is one

B. the outputs are of different amplitudes

C. only one supply voltage is used

D. opposite polarity signals are applied to the inputs