Power Systems The arc voltage produced in an AC circuit breaker is always leading the arc current by 90°. in phase with the arc current. lagging the arc current by 90°. in phase opposition with the arc current. leading the arc current by 90°. in phase with the arc current. lagging the arc current by 90°. in phase opposition with the arc current. ANSWER DOWNLOAD EXAMIANS APP
Power Systems To prevent maloperation of deferentially connected relay while energizing a transformer, the relay restraining coil is biased with 2nd harmonic current. 3rd harmonic current. 7th harmonic current. 5th harmonic current. 2nd harmonic current. 3rd harmonic current. 7th harmonic current. 5th harmonic current. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Normally Z bus matrix is a unit matrix sparse matrix full matrix null matrix unit matrix sparse matrix full matrix null matrix ANSWER DOWNLOAD EXAMIANS APP
Power Systems Zero voltage regulation is possible only for lagging power factor unity power factor All of these leading power factor lagging power factor unity power factor All of these leading power factor ANSWER DOWNLOAD EXAMIANS APP
Power Systems Earthing switch is used for measuring of safety voltage All of these discharging residual energies protection of equipment from ground faults measuring of safety voltage All of these discharging residual energies protection of equipment from ground faults ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following decides the insulation level of 400 kV, EHV line? skin effect lighting voltage switching over voltage radio interference skin effect lighting voltage switching over voltage radio interference ANSWER DOWNLOAD EXAMIANS APP
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