GETCO Exam Paper (30-11-2008) Summation transformers are used in _____ relays. distance earth-fault pilot-wire carrier distance earth-fault pilot-wire carrier ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (30-11-2008) The relay best suited for phase fault relaying for medium transmission line is reactance relay impedance relay mho relay none of these reactance relay impedance relay mho relay none of these ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (30-11-2008) Which loss in a transformer varies significantly with load? Hysteresis loss Eddy current loss Copper loss Core loss Hysteresis loss Eddy current loss Copper loss Core loss ANSWER EXPLANATION DOWNLOAD EXAMIANS APP During O.C test obtained no load losses (core loss)During S.C. test obtained copper loss (load losses)during loaded condition of transformer copper loss more significant than core loss.
GETCO Exam Paper (30-11-2008) Burden of the relay is _____ rating of relay current voltage volt-amp. watt current voltage volt-amp. watt ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (30-11-2008) In a transformer it is difficult to measure the efficiency by output-input measurement methods because efficiency of transformer is usually high and hence extremely accurate measurements will be necessary the output is sinusoidal and hence cannot be measured output is out of phase with respect to input losses are abnormally high efficiency of transformer is usually high and hence extremely accurate measurements will be necessary the output is sinusoidal and hence cannot be measured output is out of phase with respect to input losses are abnormally high ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (30-11-2008) Minimum oil C.B. use oil for cooling lubrication arc quenching insulation cooling lubrication arc quenching insulation ANSWER DOWNLOAD EXAMIANS APP
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