why 120 devided with pole and speed multiplication to determine frequency

why 120 devided with pole and speed multiplication to
determine frequency

Question Posted / bisnu prasad panda

why 120 devided with pole and speed multiplication to determine frequency..

Answer / k.prakashchandra

For 1 cycle 1 south pole and one north pole are required,so
divide poles by 2.To convert rpm to rps divide by 60

Is This Answer Correct ?

4 Yes

0 No

More Electrical Engineering Interview Questions

what is the difference between capacitive voltage transformer & inductive voltage transformer.

how generater works

How a band pass filter is constructed?

Why is back emf used for a DC motor? Highlight its significance.

why is the HT voltages are in multiples of 11KV

how to carried out tan delta test in 11 KV alternator ?

Can anyone tell the proper diagram of star delta starter????

In a large office how do we calculate required number of light fittings, assuming fittings are 4x18W or 2x36W fluorescent fitting ?

what are the differant std sizes of cable trenches?

what is the transformer efficiency?

what happen if we give 220 volts dc supply to d bulb r tube light?

which motor is suitable for traction? why?

For more Electrical Engineering Interview Questions Click Here