Transmission and Distribution

The loads on distributors systems are generally__________________?

A. balanced
B. unbalanced
C. either of the above
D. none of the above

The material commonly used for insulation in high voltage cables is_______________?

A. lead
B. paper
C. rubber
D. none of the above

Multicore cables generally use________________?

A. square conductors
B. circular conductors
C. rectangular conductors
D. sector-shaped conductors
E. none of the above

High voltage transmission lines use__________________?

A. suspension insulators
B. insulators
C. both A. and B.
D. none of the above

The distributors for residential areas are______________?

A. single phase
B. three-phase three wire
C. three-phase four wire
D. none of the above

A. underground
B. overhead
C. either of the above
D. none 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

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

A booster is a_________________?

A. series wound generator
B. shunt wound generator
C. synchronous generator
D. none of the above

Which of the following D.C. distribution system is the simplest and lowest in first cost ?

A. Radial system
B. Ring system
C. Inter-connected system
D. None of the above