electrical engineering MCQs – Page 190

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 Review each marked answer and report any item that may be outdated or unclear.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
3781. Load shedding is possible through which of the following?
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A. Switching of the loads

B. Frequency reduction

C. Any of the above

D. Voltage reduction

3782. ___________ is invariably used as base load plant.
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A. Pumped storage plant

B. Nuclear power plant

C. Gas turbine plant

D. Diesel engine plant

3783. A low utilization factor for a plant indicates that
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A. plant is used for stand by purpose only

B. plant is used for base load only

C. plant is used for peak load as well as base load

D. plant is under maintenance

3784. Which of the following plants is almost inevitably used as base load plant?
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A. Pumped storage plant

B. Nuclear power plant

C. Gas turbine plant

D. Diesel engine plant

3785. Annual operating expenditure of a power plant consists of____________?
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A. semi-fixed charges

B. running charges

C. all of the above

D. fixed charges

3786. The effect of electric shock on human body depends on which of the following?
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A. voltage

B. duration of contact

C. current

D. all of the above
3787. Generators for peak load plants are usually designed for maximum efficiency at____________?
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A. 25 percent overload

B. 25 to 50 percent full load

C. full load

D. 50 to 75 percent full load
3788. Which of the following, in a thermal power plant, is not a fixed cost?
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A. Insurance charges

B. Depreciation

C. Interest on capital

D. Fuel cost
3789. Load curve is useful in deciding the_____________?
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A. operating schedule of generating units

B. sizes of generating units

C. all of the above

D. total installed capacity of the plant

3790. Air will not be the working substance in which of the following?
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A. Petrol engine

B. Open cycle gas turbine

C. Closed cycle gas turbine

D. Diesel engine

3791. Annual depreciation of the plant it proportional to the earning capacity of the plant vide
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A. reducing balances depreciation

B. none of the above

C. sinking fund depreciation

D. straight line depreciation

3792. _________offers the highest electric load.
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A. Vacuum cleaner

B. Washing machine

C. Toaster

D. Television set

3793. __________ industry has the least power consumption per ton of product?
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A. Caustic soda

B. Soap

C. Vegetable oil

D. Sugar

3794. In power plants insurance cover is provided for which of the following?
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A. Equipment only

B. Skilled workers only

C. All of the above

D. Unskilled workers only

3795. A load curve indicates___________?
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A. average kWh (kW) energy consumption during the period

B. average power used during the period

C. none of the above

D. either of the above

3796. Salvage value of the plant is always____________?
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A. any of the above

B. negative

C. zero

D. positive

3797. Direct conversion of heat into electrical energy is possible through____________?
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A. none of the above

B. fuel cells

C. MHD generators

D. solar cells

3798. Annual depreciation as per straight line method, is calculated by__________?
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A. the capital cost divided by number of year of life

B. increasing a uniform sum of money per annum at stipulated rate of interest

C. the capital cost minus the salvage value, is divided by the number of years of life

D. none of the above

3799. Which of the following equipment provides fluctuating load?
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A. Lathe machine

B. Exhaust fan

C. Welding transformer

D. All of the above

3800. Which of the following source of power is least reliable?
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A. Geothermal power

B. Wind power

C. Solar energy

D. iMHD