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Transmission & Distribution

Transmission & Distribution
Which of the following equipment is used to limit short circuit level in a substation?

Series reactor
Coupling capacitor
isolator
Lightning switch

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Transmission & Distribution
Impedance relay is used on _____ transmission lines.

All
Medium
Short
Long

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Transmission & Distribution
In a 3 wire dc system, the current in +ve outer is 200 A and in the -ve outer is 100 A. The current in the neutral wire is

100 A
300 A
200 A
0 A

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Transmission & Distribution
The most common fault in overhead distribution system is

All phase short circuited
One phase to earth fault
Phase to phase fault
None of the listed here

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Transmission & Distribution
The power transmitted will be maximum when

Reactance is high
Sending end voltage is more
Corona losses are minimum
Receiving end voltage is more

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Transmission & Distribution
In india, secondary distribution is carried out at

700/350 V
None of the listed here
400/230 V
600/300 V

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