Power Systems Breaking current is a ------------------ value? any of the above maximum average RMS any of the above maximum average RMS ANSWER DOWNLOAD EXAMIANS APP
Power Systems In a 220 kV system, the inductance and capacitance up to the circuit breaker location are 25 mH and 0.025 µF respectively. The value of resistor required to be connected across the breaker contacts which will give no transient oscillations, is 500 Ω 1000 Ω 250 Ω 25 Ω 500 Ω 1000 Ω 250 Ω 25 Ω ANSWER DOWNLOAD EXAMIANS APP
Power Systems What is the approximate efficiency of a normal thermal power station? 30-40% 45-55% 20-25% 60-70% 30-40% 45-55% 20-25% 60-70% ANSWER DOWNLOAD EXAMIANS APP
Power Systems If a 500 MVA, 11 kV 3-phase generator at 50 Hz feeds through a transfer impedance of (0+j0.605) Ω/phase, an infinite voltage also at 11 kV, then the maximum steady state power transfer on the base of 500 MVA and 11 kV is 0.4 pu 0.5 pu 0.8 pu 1 pu 0.4 pu 0.5 pu 0.8 pu 1 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems A hydraulic turbine having rated speed of 250 rpm is connected to a synchronous generator. In order to produce power at 50 Hz, the numbers of pole are required in the generator 12. 24. 16. 6. 12. 24. 16. 6. ANSWER DOWNLOAD EXAMIANS APP
Power Systems If we increase the length of the transmission line, the charging current increases None of these remains unaffected decreases increases None of these remains unaffected decreases ANSWER DOWNLOAD EXAMIANS APP
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