PH-311
A.c. generator
Physics · Secondary 3 · Medium · A.c. generator
An a.c. generator produces electricity at 60 Hz when its shaft rotates at 3600 revolutions per minute (rpm). The speed is reduced to 2400 rpm. What is the new frequency of the a.c. output?
- 20 Hz
- 30 Hz
- 40 Hz
- 90 Hz
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