engineering recuitment BHEL Engineer Trainee Mock Test 2025 Power Systems Fault Analysis Short Circuit Capacity
A 50 Hz, 4 Pole, 500 MVA, 22 kV turbo generator is delivering rated MVA at a power factor of 0.8. Suddenly a fault occurs reducing the electric power output by 40%. Neglect the losses and assume constant power input to the shaft. The accelerating torque in the generator at the time of fault is
1
1.528 MNm
2
1.018 MNm
3
0.848 MNm
4
0.509 MNm