Power Systems Mechanical energy is supplied to a DC generator at the rate of 4200 J / S. The generator delivers 32.2 Amp at 120 V. How much energy is cost per minute of operation 20060 J. 25060 J. 23060 J. 20160 J. 20060 J. 25060 J. 23060 J. 20160 J. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following faults is/are treated as external faults? Over voltage Failure of prime mover of the generator Failure of excitation All of these Over voltage Failure of prime mover of the generator Failure of excitation All of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems The charging reactance of 50 km transmission line is 1500 Ω. What is the charging reactance for 100 km length of line? 750 Ω 1500 Ω 1000 Ω 3000 Ω 750 Ω 1500 Ω 1000 Ω 3000 Ω ANSWER DOWNLOAD EXAMIANS APP
Power Systems In thermal power stations, economiser will reduce the heat increase the thermal efficiency both 2 and 3 reduce the thermal efficiency reduce the heat increase the thermal efficiency both 2 and 3 reduce the thermal efficiency ANSWER DOWNLOAD EXAMIANS APP
Power Systems Advantages of shunt compensation is/are It requires less maintanance single unit can be used as both capacitance and inductor by adjusting the excitation smooth voltage regulation is possible by controlling excitation All of these It requires less maintanance single unit can be used as both capacitance and inductor by adjusting the excitation smooth voltage regulation is possible by controlling excitation All of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems For n bus power system size of Y bus matrix is (n-1)×(n-1) (n-1)×(n-2) n×n (n-2)×(n-2) (n-1)×(n-1) (n-1)×(n-2) n×n (n-2)×(n-2) ANSWER DOWNLOAD EXAMIANS APP
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