Q. 53 A loss less single machine infinite bus power system is shown below :
A loss less single machine infinite bus power system is shown below :
The synchronous generator transfers 1.0 per unit of power to the infinite bus. The
critical clearing time of circuit breaker is 0.28 s. If another identical synchronous
generator is connected in parallel to the existing generator and each generator is
scheduled to supply 0.5 per unit of power, then the critical clearing time of the
circuit breaker will
(A) reduce to 0.14 s
(B) reduce but will be more than 0.14s
(C) remain constant at 0.28 s
(D) increase beyond 0.28 s
Answer:(B)
Explanation:
