Power Systems In relay coil which is used? Potential transformer. Power transformer. Instrument transformer. Current transformer. Potential transformer. Power transformer. Instrument transformer. Current transformer. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Resistance switching in normally employed in air blast circuit breaker. all breakers. minimum oil breakers. bulk oil breakers. air blast circuit breaker. all breakers. minimum oil breakers. bulk oil breakers. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The sequence components of the fault current are as follows : Ipositive = j1.5 pu, Inegative = − j0.5 pu, Izero = − j pu Which fault is this? LLLG. LLG. LG. LL. LLLG. LLG. LG. LL. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A hydro electric generating station is supplied from a reservoir of capacity 5 × 10 − 6 cubic meters at a head of 200 meters. Find the total energy available in KWh if the overall efficiency is 75 % 5 × 106 kWh. 4.06 × 106 kWh. 3 × 106 kWh. 2.044 × 106 kWh. 5 × 106 kWh. 4.06 × 106 kWh. 3 × 106 kWh. 2.044 × 106 kWh. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A fault occurring at the terminals of an unloaded synchronous generator operating at its rated voltage has resulted in the following values of currents and voltages. IR0 = j 2.37 pu IR1 = -j 3.05 pu IR2 = j 0.68 pu VR0 = VR1 = VR2 = 0.237 pu. Which of the following faults has occurred? LG LLL LLG LL LG LLL LLG LL ANSWER DOWNLOAD EXAMIANS APP
Power Systems When a neutral point of 3 - Φ system is directly connected to earth then it has what type of grounding? Peterson coil. Reactance. Solid. Resistance. Peterson coil. Reactance. Solid. Resistance. ANSWER DOWNLOAD EXAMIANS APP
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