Power Systems If the fault current is 2000 A, the relay setting is 50% and CT ratio is 400 : 5, then plug setting multiplier will be 15. 50. 25. 10. 15. 50. 25. 10. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following relays is/are unit protection relays? both 1 and 2 Buccholz relays over current relays Differential relays both 1 and 2 Buccholz relays over current relays Differential relays ANSWER DOWNLOAD EXAMIANS APP
Power Systems Stability of a transmission line can be increased by shunt reactor series capacitor shunt capacitor both 1 and 2 shunt reactor series capacitor shunt capacitor both 1 and 2 ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 50 Hz, 17.32 kV generator is connected to a power system. The system reactance and capacitance per phase are 10 mH and 0.2 mF respectively. What is the maximum voltage across the contacts of the circuit breaker at an instant when it passes through zero? 29.28 kV 30.28 kV 31.28 kV 28.28 kV 29.28 kV 30.28 kV 31.28 kV 28.28 kV ANSWER DOWNLOAD EXAMIANS APP
Power Systems A diesel power station has fuel consumption of 0.28 Kg per kWh. The calorific value of fuel is being 10000 KCal / kg. Determine the overall efficiency 40 %. 30.26 %. 40.85 %. 30.7 %. 40 %. 30.26 %. 40.85 %. 30.7 %. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A guard ring is used in string type insulator having 3 units to improve string efficiency. Find the capacitance of metal link 2 if pin to earth capacitance of each unit is 1 F? 2 F 1 F 0.5 F 4 F 2 F 1 F 0.5 F 4 F ANSWER DOWNLOAD EXAMIANS APP
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