electrical engineering MCQs – Page 194

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 Review each marked answer and report any item that may be outdated or unclear.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 generation 2. analog electronics 3. solid state switching circuits 4. parallel circuits 5. switchgear and protection 6. op amp circuits 7. transistor audio power amplifiers 8. electrostatics 9. heating and welding 10. multi stage transistor amplifiers 11. passive filters 12. network theorems 13. regulated d c power supply 14. a c fundamentals circuits and circuit theory 15. electromagnetic induction 16. power electronics 17. magnetism and electromagnetism 18. transformers 19. modulation and demodulation 20. d c generators 21. semiconductor theory 22. single phase induction motors 23. semiconductor diode 24. hybrid parameters 25. digital electronics 26. oscillators 27. earthing or grounding 28. single stage transistor amplifiers 29. d c motors 30. transistor biasing 31. amplifiers with negative feedback 32. basic electrical 33. electronic instruments 34. synchronous motors 35. field effect transistors fet 36. magnetic circuit 37. control systems 38. industrial drives 39. power generation 40. series parallel circuits 41. transistor tuned amplifiers 42. electrical engineering materials 43. rectifiers and converters 44. integrated circuits 45. scr silicon controlled rectifiers 46. cables 47. polyphase induction motors 48. measurement and instrumentation 49. transistors 50. electrical machine design 51. electrolysis and storage of batteries 52. electric traction 53. transmission and distribution

3861. The switch that has the fastest speed of operation is ____________ switch?
0

A. Electronic

B. Electromechanical

C. Mechanical

D. None of the above

3862. When a transistor is used as an amplifier, it is operated in the _____________ region?
0

A. None of the above

B. Saturation

C. Off

D. Active

3863. When a transistor is driven to saturation, ideally the output is _____________?
0

A. 2VCC

B. 0

C. VCC

D. VCC/2

3864. ______________ multivibrator is a square wave oscillator?
0

A. Monostable

B. Astable

C. Bistable

D. None of the above

3865. A relay is superior to a mechanical switch because it _______________?
0

A. Is relatively inexpensive

B. Combines control with power amplification

C. None of the above

D. Does not require moving contacts

3866. When a transistor is driven to cut off, ideally the output is _______________?
0

A. 0

B. VCC/3

C. VCC

D. VCC/2

3867. When the transistor (CE arrangement) is in the cut off region, the collector current is ______________?
0

A. ICBO

B. ( + 1) ICEO

C. IC(sat)

D. ICEO

3868. For an integrating circuit to be effective , the RC product should be____________ the time period of the input wave?
0

A. 5 times smaller than

B. At least 10 times greater than

C. 5 times greater than

D. Equal to

3869. For a differentiating circuit to be effective, the RC product should be ___________ the time period of the input wave?
0

A. 5 times greater than

B. At least 10 times greater than

C. 5 times smaller than

D. Equal to

3870. A monostable vibrator has_____________
0

A. None of the above

B. Two stable states

C. One stable state

D. No stable state

3871. When a rectangular voltage waveform is applied to a capacitor, then the current waveform is ______________?
0

A. Rectangular

B. Sinusoidal

C. Sawtooth

D. Square

3872. A differentiating circuit is a simple RC circuit with output taken across ____________?
0

A. R

B. C

C. Both R and C

D. None of the above

3873. An astable multivibrator has ________________?
0

A. No stable state

B. One stable state

C. Two stable states

D. None of the above

3874. An integrating circuit is a simple RC series circuit with output taken across ______________?
0

A. Both R and C

B. R

C. C

D. None of the above

3875. If the input to a differentiating circuit is a saw-tooth wave, then output will be _____________?
0

A. Triangular

B. Square

C. Sine

D. Rectangular

3876. If d.c. supply of 10 V is fed to a differentiating circuit, then output will be_______________?
0

A. 0 V

B. 20 V

C. 10 V

D. None of the above

3877. If the input to an integrating circuit is a succession of alternating positive and negative pulses of very short duration, the output will be _____________wave A?
0

A. ectangular

B. Sine

C. Triangular

D. Square

3878. The positive clipper is that which removes the ____________half-cycles of the input voltage?
0

A. Negative

B. Positive

C. Both positive and negative

D. None of the above

3879. A switch has ______________?
0

A. Two states

B. Three states

C. One state

D. None of the above

3880. In a multivibrator, we have___________ feedback?
0

A. Negative

B. 100 % positive

C. Both positive and negative

D. None of the above

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