(Solved) The secondary distribution system (A.C.) employs

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 Question :

The secondary distribution system (A.C.) employs... (GETCO 2012) 

A. 3.0 kV, 3-phase, 3 wire system

B. 6.6 kV, 3-phase, 3 wire system

C. 1.0 kV, 3-phase, 3 wire system

D. 400/230 V, 3-phase, 4 wire system 


Answer : D

Explanation : Secondary distribution is at voltage which is coming to residential houses.

4 wire system is required because each individual phase with neutral is used to give single phase supply. 4th wire is neutral wire.


Hope this explanation will help you to solve your queries. Please comment below for further queries. Thank you! 

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