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power generation MCQs

Practise focused power generation questions with marked answers for exam preparation and subject revision.

power generation Mcqs

1. If the load factor of a power station is high then its cost of generation will be_______?
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A. High.

B. Low.

C. Depend upon plant type.

D. Remain same.

2. Annual operating expenditure of a power plant consists of_________?
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A. running charges

B. semi-fixed charges

C. all of the above

D. fixed charges

3. Load factor of a power station is defined as____________?
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A. average load/maximum demand

B. average load x maximum demand

C. maximum demand/average load

D. none of the above

4. Which of the following Power Plant causes least environmental pollution____________?
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A. Hydro Power Plant

B. Thermal Power Plant

C. Diesel Power Plant

D. Nuclear Power Plant

5. Which of the following generating station has minimum running cost?
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A. Nuclear

B. Diesel

C. Thermal

D. Hydro

6. Which of the following is usually not the generating voltage__________?
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A. 9.9 kV

B. 11kV

C. 6.6 kV

D. 13.2kV

7. At low value of power factor, the cost of generation of a power station will be____________?
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A. low

B. high

C. none of the above

D. remain same

8. If the diversity factor of a power station is high then its generation cost is___________?
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A. high

B. low

C. remain same

D. depend on the plan type

9. Which of the following device is used to measure vacuum?
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A. Hygrometer

B. Barometer

C. U-tube manometer

D. Venturi metre

10. Which of the following power plant has least fuel transportation______________?
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A. diesel generating plants

B. nuclear power plants

C. steam power stations

D. thermal power plants

11. Compounding of steam turbine is done for_______________?
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A. balancing the turbine

B. reducing the rotor speed

C. reducing the work done

D. increasing the rotor speed

12. Demand factor is defined as___________?
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A. connected load/maximum demand.

B. average load/maximum load.

C. maximum demand/connected load

D. average load x maximum load

13. Load curve is useful in deciding the__________?
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A. sizes of generating units

B. A. operating schedule of generating units

C. total installed capacity of the plant

D. all of the above

14. Which of the following load is responsible for lower power factor of supply system__________?
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A. synchronous Motors

B. all of the above

C. induction motors

D. resistive loads

15. Which of the following power plant usually offer highest maintenance cost___________?
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A. Hydro-electric power plants

B. Thermal power plants

C. Diesel engine power plant

D. Nuclear power plants

16. In hydro power plant, the graph between discharge and time is known as___________?
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A. monograph.

B. discharge graph.

C. load graph.

D. hydro graph

17. Which of the following power plant has highest Depreciation charges?
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A. All have same

B. Thermal plant

C. Diesel plant

D. Hydroelectric plant

18. The value of the reheat factor is of the order of_____________?
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A. 1.0 to 1.05

B. 0.8 to 1.0

C. above 1.5

D. 1.1 to 1.5

19. In thermal power plant, heat from the flue gases is utilized in___________?
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A. chimney

B. super heater

C. economizer

D. condenser

20. Which material is used to made a solar cell_______________?
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A. scandium

B. silicon

C. aluminum

D. Germanium

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