Which of the following is the common synchronous speed in R.P.M. between 50 Hz and be 60 Hz alternators ?
A. 200
B. 300
C. 600
D. 900
Answer:C
Which of the following is the common synchronous speed in R.P.M. between 50 Hz and be 60 Hz alternators ?
A. 200 B. 300 C. 600 D. 900