Question

What determines the frequency of ac produced in a generator?

Answer 1

Frequency is the interval at which the sine wave magnitude of the voltage and current alternate between positive and negative due to the reverse of current polarity as the conductors are passed by alternating north and south magnetic poles. In American generators (and a few other countries), frequency is 60 cycles per second, in Europe, Asia and most of the rest of the world, frequency is 50 cycles per second.

Mathematically, frequency is determined by the speed of the rotor and the number of magnetic poles on the rotor:

f [frequency] = (speed [rpm] * number of poles ) / 120 [a constant value conversion factor to correct for multiplying Cycles per Second, Poles per Cycle and revolutions per Minute}

Answer 2

hey mate ur ans is ...

the frequency of ac generator is generally 50Hz to 60Hz

There are several methods to determine if your generator is operating at the correct frequency.

●Some sophisticated DVMs such as the advanced Fluke meters will read frequency directly.

●Another option might be use of an oscilloscope.

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