economics of power generation MCQs – Page 4

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

economics of power generation Mcqs

61. The increased load during summer months is due to____________?
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A. increased business activity

B. increased use of fans and air conditioners

C. none of the above

D. increased water supply

62. Which of the following are not repayable after a stipulated period?
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A. Shares

B. Fixed deposits

C. Cash certificates

D. Bonds

63. Diversity factor has direct effect on the____________?
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A. fixed cost of unit generated

B. running cost of unit generated

C. both A. and B.

D. neither A. nor B.

64. In an interconnected system, the diversity factor of the whole system:
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A. decreases

B. none of the above

C. increases

D. remains unchanged

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

B. Diesel

C. Hydro

D. Thermal

66. ___________ will offer the least load.
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A. Electric shaver

B. Television

C. Hair dryer

D. Vacuum cleaner

67. Load curve of a power plant has always____________?
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A. All of these

B. negative slope

C. positive slope

D. zero slope

68. For the same cylinder dimensions and speed, which of the following engine will produce least power?
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A. Petrol engine

B. Supercharged engine

C. Diesel engine

D. All of the above engines will equal power

69. Which of the following is the disadvantage of static capacitor for power factor improvement?
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A. Cannot be repaired

B. All of the above

C. Easily damaged by high voltage

D. Short service life

70. Which of the following is not a method for estimating depreciation charges?
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A. Straight line method

B. Sinking fund method

C. Halseys 5050 formula

D. Diminishing value method

71. The primary reason for low power factor is supply system is due to installation of____________?
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A. induction motors

B. synchronous motors

C. single phase motors

D. d.c. motors

72. A power transformer is usually rated in____________?
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A. kW

B. kVA

C. kVAR

D. kWh

73. 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

74. ___________ 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

75. 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

76. 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

77. 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

78. 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

79. 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

80. 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

Showing 61 to 80 of 98 mcqs