The number of poles required to achieve a speed of 1800 RPM, when operated on 400V, 60 Hz frequency is:
A. 2
B. 4
C. 6
D. 8
Answer:B
The number of poles required to achieve a speed of 1800 RPM, when operated on 400V, 60 Hz frequency is:
A. 2 B. 4 C. 6 D. 8