A three phase 400v, 50 Hz induction motor is to have it's speed controlled by a variable frequency drive unit to 1100rpm. The frequency required is found to be 37Hz, and the motor terminal voltage is reduced at the same ratio. For the conditions above, calculate the number of poles in the motor and the motor terminal voltage.

I am looking for help to better understand my math in my electrical course. The tafe lecturere is no good and I'm having trouble with some of these questions. I am hoping it will be explined in simple terms which will allow me to then practise on the many other questions I have to fill out. This is just one example of them.

1## Re: calculate no of poles and motor terminal voltage