economics of power generation MCQs – Page 2

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

economics of power generation Mcqs
21. 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

22. 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

23. 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

24. 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
25. 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
26. 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)
27. 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

28. 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.

29. __________ 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

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

B. water cooled

C. natural air cooled

D. hydrogen cooled
31. 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

32. 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)

33. By the use of which of the following power factor can be improved?
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A. Static capacitors

B. Phase advancers

C. Synchronous compensators

D. Any of the above
34. Ships are generally powered by___________?
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A. diesel engines

B. none of the above

C. hydraulic turbines

D. nuclear power plants

E. steam accumulators

35. A synchronous condenser is virtually which of the following?
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A. Over excited synchronous motor

B. Induction motor

C. Under excited synchronous motor

D. D.C. generator

36. Depreciation charges are high in case of__________?
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A. thermal plant

B. hydroelectric plant

C. diesel plant

D. none of these

37. An over excited synchronous motor on no load is known as__________?
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A. alternator

B. synchronous condenser

C. generator

D. induction motor

38. In a power plant if the maximum demand on the plant is equal to the plant capacity, then
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A. diversity factor will be unity

B. plant reserve capacity will be zero

C. load factor will be nearly 60%

D. load factor will be unity

39. Which plant can never have 100 percent load factor?
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A. Peak load plant

B. Nuclear power plant

C. Base load plant

D. Hydro electric plant

40. In case of _________ fuel transportation is the major problem.
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A. thermal power plants

B. diesel power plants

C. hydro-electric power plants

D. nuclear power plants