Power Systems Mho relay is used for protection of short lines. none of these. medium lines. long lines. short lines. none of these. medium lines. long lines. ANSWER DOWNLOAD EXAMIANS APP
Power Systems In a biased differential relay the bias is defined as the ratio of operating coil current and restraining coil current. fault current and operating coil current. fault current and restraining coil current. number of turns of restraining and operating coil. operating coil current and restraining coil current. fault current and operating coil current. fault current and restraining coil current. number of turns of restraining and operating coil. 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 25 Ω 1000 Ω 250 Ω 500 Ω 25 Ω 1000 Ω 250 Ω ANSWER DOWNLOAD EXAMIANS APP
Power Systems Transmission line has a length of 300 km, operating at sending end voltage Vs = 1 pu, find the receiving end voltage(Vr) at no load? 1.098 pu 1 pu 0.098 pu 0.98 pu 1.098 pu 1 pu 0.098 pu 0.98 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems Skin effective is more in case of power lines communication lines same in both cases None of these power lines communication lines same in both cases None of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems The line currents of 3-phase supply are: IR = 3 + j 5 A IY =2 + j 2 A IB = -2 - j 1 A The zero sequence current will be 1 + j 4 A -2 - j 1 A 1 + j 2 A 5 + j 7 A 1 + j 4 A -2 - j 1 A 1 + j 2 A 5 + j 7 A ANSWER DOWNLOAD EXAMIANS APP
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