50 Hz generator is delivering 50% of the power that is capable of delivering through a transmission line to an infinite bus. A fault occurs that increases the reactance between the generator and bus to 500% before the fault. When the fault is isolated, the maximum power that can be delivered is 75% of the original maximum value. The critical clearing angle for the condition is desired, will be

50 Hz generator is delivering 50% of the power that is capable of deli

1.	50 Hz generator is delivering 50% of the power that is capable of delivering through a transmission line to an infinite bus. A fault occurs that increases the reactance between the generator and bus to 500% before the fault. When the fault is isolated, the maximum power that can be delivered is 75% of the original maximum value. The critical clearing angle for the condition is desired, will be
A.	67.44
B.	70
C.	50.4
D.	none of these
Answer» B. 70

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