Power Systems For complete protection of 3-phase system from the short circuit faults minimum number of relays required are six three two one six three two one ANSWER DOWNLOAD EXAMIANS APP
Power Systems A thermal protection relay provides protection against what? any of the above Short circuit Temperature Over load any of the above Short circuit Temperature Over load ANSWER DOWNLOAD EXAMIANS APP
Power Systems The Y bus matrix of a 100 bus interconnected system is 90% sparse. Then find the number of non zero elements in the Y bus matrix? 9000 10 90 1000 9000 10 90 1000 ANSWER DOWNLOAD EXAMIANS APP
Power Systems A transmission line has self and mutual impedances are 0.8 and 0 pu respectively. Find the positive, negative and zero sequence impedances respectively? 0.6, 0.8 and 1.2 pu 0.6, 0.6 and 1.2 pu 0.6, 0.6 and 0.6 pu 0.8, 0.8 and 0.8 pu 0.6, 0.8 and 1.2 pu 0.6, 0.6 and 1.2 pu 0.6, 0.6 and 0.6 pu 0.8, 0.8 and 0.8 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems For head and low discharge the water turbine used Pelton wheel. Francis turbine. propeller turbine. Kaplan wheel. Pelton wheel. Francis turbine. propeller turbine. Kaplan wheel. ANSWER DOWNLOAD EXAMIANS APP
Power Systems What type of back up protection is used for alternators? Impedance relay. Mho relay. Buchholz relay. IDMT relay. Impedance relay. Mho relay. Buchholz relay. IDMT relay. ANSWER DOWNLOAD EXAMIANS APP
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