Transmission and distribution Archives

21. The operating voltage of super-tension cables is up to

3.3 kV

6.6 kV

11 kV

33 kV

Detailed SolutionThe operating voltage of super-tension cables is up to

22. In a D.C. 3-wire distributor using balancers and having unequal loads on the two sides

both balancers run as generators

both balancers run as motors

3-wire distributor using balancers and having unequal loads on the two sides A. both balancers run as generators B. both balancers run as motors C. balancer connected to lightly- loaded side runs as a motor

balancer connected to heavily- loaded side runs as a motor

Detailed SolutionIn a D.C. 3-wire distributor using balancers and having unequal loads on the two sides

23. A uniformly loaded D.C. distributor is fed at both ends with equal voltages. As compared to a similar distributor fed at one end only, the drop at the middle point is

One-fourth

One-third

distributor is fed at both ends with equal voltages. As compared to a similar distributor fed at one end only, the drop at the middle point is A. One-fourth B. One-third C. One-half

Twice

Detailed SolutionA uniformly loaded D.C. distributor is fed at both ends with equal voltages. As compared to a similar distributor fed at one end only, the drop at the middle point is