electrical engineering MCQs – Page 187

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 Review each marked answer and report any item that may be outdated or unclear.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
3721. A consumer has to pay lesser fixed charges in____________?
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A. two part tariff

B. flat rate tariff

C. any of the above

D. maximum demand tariff
3722. Approximate estimation of power demand can be made by_____________?
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A. economic parameters

B. load survey method

C. statistical methods

D. mathematical method

E. all of the above
3723. When the demand of consumers is not met by a power plant, it will resort to which of the following?
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A. Load shedding

B. Power factor improvement at the , generators

C. Penalising high load consumers by increasing the charges for electricity

D. Efficient plant operation

3724. For high value of diversity factor, a power station of given installed capacity will be in a position to supply?
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A. neither A. nor B.

B. less number of consumers

C. either A. or B.

D. more number of consumers
3725. Low power factor is usually not due to___________?
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A. fluorescent tubes

B. induction motors

C. incandescent lamp

D. arc lamps

3726. Which of the following is the essential requirement of peak load plant ?
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A. It should produce high voltage

B. It should be small in size

C. It should be capable of starting quickly

D. It should run at high speed

3727. Which of the following component, in a steam power plant, needs maximum maintenance attention?
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A. Steam turbine

B. Condenser

C. Water treatment plant

D. Boiler
3728. Which of the following is not a source of power?
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A. Photovoltaic cell

B. Photoelectric cell

C. Solar cell

D. Thermocouple
3729. Load curve helps in deciding___________?
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A. all of the above

B. sizes of the generating units

C. total installed capacity of the plant

D. operating schedule of generating units

3730. In whichof the following power plants the maintenance cost is usually high?
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A. Diesel engine power plants

B. Thermal power plants

C. Nuclear power plant

D. Hydro-electric power plants

3731. The connected load of a IVMIM uir consumer is around___________?
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A. 120 kW

B. 80 kW

C. 5 kW

D. 40 kV

3732. In a load curve the highest point represents______________?
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A. average demand

B. diversified demand

C. none of the above

D. peak demand
3733. High load factor indicates
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A. either of the above

B. none of the above

C. average power used during the period

D. average kWh (kW) energy consumption during the period
3734. The efficiency of a plant is of least concern when it is selected as___________?
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A. casual run plant

B. peak load plant

C. base load plant

D. either A. or (b)
3735. Which of the following should be used for extinguishing electrical fires?
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A. CO2 fire extinguisher

B. Foam type fire extinguisher

C. Carbon tetrachloride fire extinguisher

D. Water

3736. An induction motor has relatively high power factor at__________?
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A. 20 percent load

B. near full load

C. no load

D. rated r.p.m.

3737. __________ is invariably used for peak load
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A. Pumped storage plant

B. None of the above

C. Nuclear power plant

D. Steam turbine plant

3738. Large capacity generators are invariably___________?
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A. forced air cooled

B. water cooled

C. natural air cooled

D. hydrogen cooled
3739. A pilot exciter is provided on generators for which of the following reasons?
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A. To provide requisite starting torque to generator

B. None of the above

C. To excite the poles of main exciter

D. To provide requisite starting torque to main exciter

3740. In two part tariff, variation in load factor will affect____________?
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A. fixed charges

B. operating or running charges

C. both A. and (b)

D. either A. or (b)