transmission and distribution MCQs – Page 5

Practise focused transmission and distribution questions with marked answers for exam preparation and subject revision.

transmission and distribution Mcqs
81. The following system is not generally used?
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A. 3-phase 4 wire

B. 1-phase 3 wire

C. 3-phase 3 wire

D. 1-phase 4 wire

82. In a substation the following equipment is not installed?
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A. shunt reactors

B. exciters

C. series capacitors

D. voltatre transformers

83. Most of the high transmission lines in Pakistan are_______________?
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A. none of the above

B. underground

C. overhead

D. either of the above

84. Which of the following materials is not used for transmission and distribution of electrical power________________?
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A. Steel

B. Aluminium

C. Tungsten

D. Copper

85. Transmitted power remaining the same, if supply voltage of a D.C. 2-wire feeder is increased 100 percent, saving in copper is____________________?
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A. 50 percent

B. 100 percent

C. 75 percent

D. 25 percent

86. For transmission of power over a distance of 500 km, the transmission voltage should be in the range?
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A. 100 to 120 kV

B. 60 to 100 kV

C. 20 to 50 kV

D. 150 to 220 kV
87. The power factor of industrial loads is generally______________?
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A. leading

B. zero

C. lagging

D. unity

88. The underground system cannot be operated above_________________?
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A. 66 kV

B. 440 V

C. 33 kV

D. 11 kV

89. The voltage of the single phase supply to residential consumers is_____________?
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A. 230 V

B. 110 V

C. 400 V

D. 210 V

90. The corona is considerably affected by which of the following _______________?
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A. Shape of the conductor

B. Surface condition of the conductor

C. All of the above

D. Size of the conductor