Important Questions of Distribution Systems

Important Questions of Distribution Systems:

1. What do you understand by distribution system ?

2. Draw a single line diagram showing a typical distribution system.

3. Define and explain the terms : feeder, distributor and service mains.

4. Discuss the relative merits and demerits of underground and overhead systems.

5. Explain the following systems of distribution :

(i) Radial system

(ii) Ring main system

(iii) Interconnected system

6. Discuss briefly the design considerations in distribution system.

7. With a neat diagram, explain the complete a.c. system for distribution of electrical energy.

8. Write short notes on the following :

(i) Distribution transformers

(ii) 3-wire d.c. distribution

(iii) Primary distribution

9. Can transmission and distribution systems be distinguished merely by their voltages ? Explain

10. It is suggested that since distribution transformer links the primary and utilization voltage, secondary system is not essential, Is it a feasible proposition ?

11. What are the situations where the cost of underground system becomes comparable to overhead system ?

12. What are the effects of high primary voltage on the distribution system?