The material commonly used for sheaths of underground cables is______________?

The usual spans with R.C.C. poles are_______________?

A. 40—50 meters
B. 60—100 meters
C. 80—100 meters
D. 300—500 meters

The minimum clearance between the ground and a 220 kV line is about_________________?

A. 4.3 m
B. 5.5 m
C. 7.0 m
D. 10.5 m

A booster is a_________________?

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

The loads on distributors systems are generally__________________?

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

In the analysis of which of the following lines shunt capacitance is neglected?

A. Short transmission lines
B. Medium transmission lines
C. Long transmission lines
D. Medium as well as long transmission lines

High voltage transmission lines use__________________?

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