Power Systems If the fault current is 2000 A, the relay setting is 50% and CT ratio is 400 : 5, then plug setting multiplier will be 25. 15. 10. 50. 25. 15. 10. 50. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Two insulator discs of identical capacitance value C make up a string for a 22 kV, 50 Hz, single phase overhead line insulation system. If pin to earth capacitance is also C, then find the string efficiency? 50% 90% 75% 86%% 50% 90% 75% 86%% ANSWER DOWNLOAD EXAMIANS APP
Power Systems Objectives of power system is/are nether 1 nor 2 Cost of electrical energy per KWh is to be minimum Rated voltage and frequency has to be supplied to the consumers both 1 and 2 nether 1 nor 2 Cost of electrical energy per KWh is to be minimum Rated voltage and frequency has to be supplied to the consumers both 1 and 2 ANSWER DOWNLOAD EXAMIANS APP
Power Systems At slack bus, which one of the following combinations of variables is not specified? Q and V V and δ P and V P and Q Q and V V and δ P and V P and Q ANSWER DOWNLOAD EXAMIANS APP
Power Systems a 50 Hz, 3-phase synchronous generator has inductance per phase of 15 mH. The capacitance of the generator and circuit breaker is 0.002 µF. What is its natural frequency? 29 kHz 2.9 kHz 290 kHz 29 MHz 29 kHz 2.9 kHz 290 kHz 29 MHz ANSWER DOWNLOAD EXAMIANS APP
Power Systems In a three-phase system, when the loads are perfectly balanced, the neutral current is zero. one - third of minimum. two - thirds of maximum. one - third of maximum. zero. one - third of minimum. two - thirds of maximum. one - third of maximum. ANSWER DOWNLOAD EXAMIANS APP
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