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.Management Sciences
Category: Transmission and Distribution
The power factor of industrial loads is generally______________?
A. unity
B. lagging
C. leading
D. zero
Galvanised steel wire is generally used as______________?
A. stay wire
B. earth wire
C. structural components
D. all of the above
The voltage of the single phase supply to residential consumers is_____________?
A. 110 V
B. 210 V
C. 230 V
D. 400 V
A conductor, due to sag between two supports, takes the form of____________?
A. semi-circle
B. triangle
C. ellipse
D. catenary
When the interconnector between two stations has large reactance?
A. the transfer of power will take place with voltage fluctuation and noise
B. the transfer of power will take place with least loss
C. the stations will fall out of step be¬cause of large angular displacement between the stations
D. none of the above
Which of the following is usually not the generating voltage ?
A. 6.6 kV
B. 8.8 kV
C. 11 kV
D. 13.2 kV
_______________are the conductors, which connect the consumer’s terminals to the distribution?
A. Distributors
B. Service mains
C. Feeders
D. None of the above
In aluminium conductors, steel core is provided to____________?
A. compensate for skin effect
B. neutralise proximity effect
C. reduce line inductance
D. increase the tensile strength
The operating voltage of supertension cables is up to_________________?
A. 3.3 kV
B. 6.6 kV
C. 11 kV
D. 33 kV
Besides a method of trial and error, which of the following methods is employed for solution of network problems in interconnected system ?
A. Circulating current method
B. Thevenin’s theorem
C. Superposition of currents
D. Direct application of Kirehhoffs laws
E. All of the above
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