The loads on distributors systems are generally__________________?

A. balanced
B. unbalanced
C. either of the above
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...
The power factor of industrial loads is generally______________?
A. unity B. lagging C. leading D. zero...
Which of the following distribution systems is more reliable?
A. Radial system B. Tree system C. Ring main system D. All are equally reliable...
By which of the following systems electric power may be transmitted ?
A. Overhead system B. Underground system C. Both A. and (b) D. None of the above...
The voltage drop, for constant voltage transmission is compensated by installing__________?
A. inductors B. capacitors C. synchronous motors D. all of above E. none of the above...
Aluminium has a specific gravity of___________?
A. 1.5 B. 2.7 C. 4.2 D. 7.8...
The skin effect of a conductor will reduce as the__________?
A. resistivity of conductor material increases B. permeability of conductor material increases C. diameter increases D. frequency increases...
Which of the following materials is not used for transmission and distribution of electrical power________________?
A. Copper B. Aluminium C. Steel D. Tungsten...
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...
The material generally used for armour of high voltage cables is_____________?
A. aluminium B. steel C. brass D. copper...