Which of the following distribution systems is more reliable?
Which of the following distribution systems is more reliable?
A. Radial system
B. Tree system
C. Ring main system
D. All are equally reliable
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The material commonly used for insulation in high voltage cables is_______________?
The material commonly used for insulation in high voltage cables is_______________?
A. lead
B. paper
C. rubber
D. none of the aboveA feeder, in a transmission system, feeds power to________________?
A feeder, in a transmission system, feeds power to________________?
A. distributors
B. generating stations
C. service mains
D. all of the aboveGalvanised steel wire is generally used as______________?
Galvanised steel wire is generally used as______________?
A. stay wire
B. earth wire
C. structural components
D. all of the aboveThe voltage of the single phase supply to residential consumers is_____________?
The voltage of the single phase supply to residential consumers is_____________?
A. 110 V
B. 210 V
C. 230 V
D. 400 VFor transmission of power over a distance of 500 km, the transmission voltage should be in the range?
For transmission of power over a distance of 500 km, the transmission voltage should be in the range?
A. 150 to 220 kV
B. 100 to 120 kV
C. 60 to 100 kV
D. 20 to 50 kVTransmitted power remaining the same, if supply voltage of a D.C. 2-wire feeder is increased 100 percent, saving in copper is____________________?
Transmitted power remaining the same, if supply voltage of a D.C. 2-wire feeder is increased 100 percent, saving in copper is____________________?
A. 25 percent
B. 50 percent
C. 75 percent
D. 100 percent