electrical engineering MCQs – Page 154

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 Review each marked answer and report any item that may be outdated or unclear.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
3061. A voltage of about 200 V can be measured__________________?
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A. none of the above

B. a D.C. potentiometer in conjunction with a known resistance

C. directly by a D.C. potentiometer

D. a D.C. potentiometer in conjunction with a volt ratio box
3062. With feedback __________ increases?
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A. sensitivity

B. effects of disturbing signals

C. system stability

D. gain

3063. Resistances can be measured with the help of_______________?
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A. wattmeters

B. voltmeters

C. ohmmeters and resistance bridges

D. ammeters

E. all of the above

3064. A moving-coil permanent-magnet instrument can be used as ____________by using a low resistance shunt?
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A. flux-meter

B. ammeter

C. voltmeter

D. ballistic galvanometer

3065. Mass, in force-voltage analogy, is analogous to________________?
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A. resistance

B. inductance

C. charge

D. current

3066. Velocity error constant of a system is measured when the input to the system is unit ___________ function?
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A. impulse

B. ramp

C. parabolic

D. step

3067. In liquid level and electrical system analogy, voltage is considered analogous to_____________?
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A. liquid flow

B. none of the above

C. head

D. liquid flow rate

3068. If the current in a capacitor leads the voltage by 80, the loss angle of the capacitor is_________________?
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A. 120

B. 10

C. 80

D. 170

3069. A.C. servomotor resembles_____________?
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A. direct current series motor

B. universal motor

C. Three phase induction motor

D. two phase induction motor
3070. Negative feedback_______________?
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A. increases the input and output impedances

B. increases the input impedance and bandwidth

C. decreases the output impedance and bandwidth

D. does not affect impedance or bandwidth

3071. For diesel locomotives the range of horsepower is_______________?
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A. 1500 to 2500

B. 500 to 1000

C. 50 to 200

D. 3000 to 5000

3072. In a vibrating reed frequency meter the natural frequencies of two adjacent reeds have a difference of___________?
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A. 0.1 Hz

B. 0.5 Hz

C. 0.25 Hz

D. 1.5 Hz

3073. ____________is a part of the human temperature control system?
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A. Digestive system

B. Perspiration system

C. Leg movement

D. Ear

3074. A common-mode signal is applied to ________________?
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A. the noninverting input

B. the inverting input

C. both iputs

D. top of the tail resistor

3075. A Weston frequency meter is_____________?
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A. dynamometer instrument

B. moving coil instrument

C. none of the above

D. moving iron instrument
3076. With feed back __________ reduces?
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A. system stability and gain

B. system stability

C. system gain

D. none of the above

3077. The speed of a locomotive is controlled by_______________?
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A. regulating steam flow to engine

B. gear box

C. applying brakes 11.

D. flywheel

3078. The scale of a rectifier instrument is_________________?
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A. neither A. nor B.

B. either A. or B.

C. non-linear

D. linear
3079. A potentiometer may be used for_________________?
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A. all of the above

B. calibration of ammeter

C. measurement of resistance

D. calibration of voltmeter

E. measurement of current

3080. The operating voltage of a meggar is about_______________?
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A. 6 V

B. 100 V

C. 40 V

D. 12 V