A turbo-alternator set feeds power to a 3-phase constant voltage, constant frequency bus. If the steam supply to the set is cut off, then the set will
A. continue to run at rated speed in the same direction.
B. continue to run at a reduced speed in the same direction.
C. run at rated speed in the reverse direction.
D. come to stop. [U.P.S.C. I.E.S. E.E.-II 1998]
Answer:A
A turbo-alternator set feeds power to a 3-phase constant voltage, constant frequency bus. If the steam supply to the set is cut off, then the set will
A. continue to run at rated speed in the same direction. B. continue to run at a reduced speed in the same direction. C. run at rated speed in the reverse direction. D. come to stop. [U.P.S.C. I.E.S. E.E.-II 1998]