GATE 2025 Electrical Engineering Q49

Question

In the system shown below, the generator was initially supplying power to the grid. A temporary LLLG bolted fault occurs at F very close to circuit breaker 1. The circuit breakers open to isolate the line. The fault self-clears. The circuit breakers reclose and restore the line. Which one of the following diagrams best indicates the rotor accelerating and decelerating areas?

Accepted Answer

Fig. (ii)

Answer

Fig. (i)

Answer

Fig. (iii)

Answer

Fig. (iv)