Question:-
A Francis turbine is coupled to an alternator to generate electricity with a frequency of 50 Hz. If the alternator has 12 poles, then the turbine should be regulated to run at which one of the following constant speeds?
Option (A)
250 rpm
Option (B)
500 rpm
Option(C)
600 rpm
Option(D)
1000 rpm
Correct Option:
(B)
question-answer-faq-9663