The ground wire should not be smaller than No _________ copper

Related Mcqs:

Arc in a circuit behaves as_______________?

A. a capackive reactance B. an inductive reactance C. a resistance increasing with voltage rise across the arc D. a resistance decreasing with voltage rise across the arc...

The voltage appearing across the contacts after opening of the circuit breaker is called__________voltage

A. recovery B. surge C. operating D. arc E. none of the above...

The current zero interruption, in oil and air blast circuit breakers, is achieved by____________?

A. lengthening of the gap B. cooling and blast effect C. both (A) and (B) D. deionizing the oil with forced air E. none of the above...

For cost and safety, the outdoor substations are installed for voltages above_________________?

A. 11 kV B. 33 kV C. 60kV D. 110kV...

In a single bus-bar system there will be complete shut down when____________?

A. fault occurs on the bus itself B. fault occurs on neutral line C. two or more faults occur simultaneously D. fault occurs with respect to earthing...