Power Systems What type of back up protection is used for alternators? Buchholz relay. Impedance relay. Mho relay. IDMT relay. Buchholz relay. Impedance relay. Mho relay. IDMT relay. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Maximum power capacity of a transmission line can be increased by increasing voltage level nether 1 nor 2 either 1 or 2 decreasing reactance value increasing voltage level nether 1 nor 2 either 1 or 2 decreasing reactance value ANSWER DOWNLOAD EXAMIANS APP
Power Systems Specified quantities of slack bus are V and δ P and Q P and δ P and V V and δ P and Q P and δ P and V 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 Power system network has a total power of 5000 MW at 50 Hz supplying to the different consumers. Frequency is varying at 1.5% per change of 2% load. Assume R =0.004 Hz/MW. Find the steady state frequency deviation if a sudden loss of 200 MW occur due to tripping of one of the transmission line? -0.52 Hz 0.52 Hz 0.48 Hz 50 Hz -0.52 Hz 0.52 Hz 0.48 Hz 50 Hz ANSWER DOWNLOAD EXAMIANS APP
Power Systems A thermal protection relay provides protection against what? Temperature Short circuit Over load any of the above Temperature Short circuit Over load any of the above ANSWER DOWNLOAD EXAMIANS APP
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