economics of power generation MCQs – Page 3

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

economics of power generation Mcqs

41. __________ will be least affected due to charge in supply voltage frequency.
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A. Mixer grinder

B. Room heater

C. Electric clock

D. Ceiling fan

42. Which of the following is not an operating cost?
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A. Fuel cost

B. Maintenance cost

C. Salaries of high officials

D. Salaries of operating staff

43. A nuclear power plant is invariably used as a__________?
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A. spinning reserve plant

B. peak load plant

C. stand-by plant

D. any of the above

E. base load plant

44. Static capacitors are rated in terms of_____________?
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A. kWh

B. none of the above

C. kW

D. kVAR

45. The area under a load curve gives__________?
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A. average demand

B. maximum demand

C. energy consumed

D. none of the above

46. Which of the following power plants need the least period for installation ?
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A. Diesel power plant

B. Hydro-electric power plant

C. Thermal power plant

D. Nuclear power plant

47. Which of the following devices may be used to provide protection against lightening over voltages?
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A. Horn gaps

B. Rod gaps

C. All of the above

D. Surge absorbers

48. In _________ fuel transportation cost is least.
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A. nuclear power plants

B. None

C. steam power stations

D. diesel generating plants

49. Different generating stations use following prime movers?
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A. any of the above

B. diesel engine

C. gas turbine

D. steam turbine

E. hydraulic turbine

50. Direct conversion of heat into electric power is possible through__________?
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A. thermionic converter

B. fuel cell

C. all of the above

D. batteries

51. For which of the following power plants highly skilled engineers are required for running the plants?
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A. Gas turbine power plants

B. Solar power plants

C. Nuclear power plants

D. Hydro-electric power plants

52. Annual depreciation cost is calculated by___________?
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A. sinking fund method

B. straight line method

C. both A. and B.

D. none of the above

53. Which of the following is an advantage of static capacitor for power factor improvement?
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A. Little maintenance cost

B. All of the above

C. Low losses

D. Ease in installation

54. For a power plant which of the following constitutes running cost?
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A. All of the above

B. Cost of fuel

C. Cost of lubricants

D. Cost of wages

55. During load shedding:
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A. system voltage is reduced

B. system frequency is reduced Efficiency is the secondary consideration in

C. some loads are switched off

D. system power factor is changed

56. Which of the following is not necessarily an advantage of interconnecting various power stations?
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A. Increased reliability

B. Improved frequency of power supplied

C. Reduction in total installed capacity

D. Economy in operation of plants

57. _____________can generate power at unpredictable or uncontrolled times?
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A. Wind power plant

B. Tidal power plant

C. Any of the above

D. Solar power plant

58. Load factor of a power station is generally___________?
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A. more than unity

B. equal to zero Diversity factor is always

C. less than unity

D. equal to unity

59. For a diesel generating station the useful life is expected to be around_________Years?
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A. 50 to 75 years

B. 20 to 50 years

C. 15 to 20 years

D. 75 to 100 years

60. With reference to a power station which of the following is not a fixed cost?
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A. Depreciation

B. Fuel cost

C. Interest on capital

D. Insurance charges

Showing 41 to 60 of 98 mcqs