11. As per the theory current doesn’t flows in Neutral, but practically it i

11. As per the theory current doesn’t flows in Neutral, but
practically it is
not applicable, explain why?
12. How to take the Vector Group Test in Transformer? What
is the purpose
of doing Vector Group Test?
13. Why the transmission lines are in 11kV, 22kV, 33kv, and
why not 10kV,
20kV, 30kV?
14. Why do we generate 3 Phase AC Supply? It is possible to
generate 4
Phase and 5 Phase explain it?

15. Explain why the Voltage drop will happen in 3 Phase
line?
16. What is the equipment used to control the generator
output?
17. What are the factors to be considered during the
Synchronization?
18. What should be value of Circuit breaker operating time
and tripping
time?
19. Why the CT Secondary is rated as 5A generally?
20. At which time Synchronous generator act as a
Synchronous Condenser?

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11. As per the theory current doesn’t flows in Neutral, but practically it is not appli..

Answer / ashok pandey

17. At DG synchronization, phase angle, frequency & voltage
level of both DG set must be same.

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