A3-phase induction motor is being driven at a frequency of 80 hz, and the motor speed is 1000 rpm. how many poles does the motor probably have and what is the slip? (10 points)

8 poles

Slip= 16.67%

Explanation:

We use the formula for synchronous speed,

Where f is the frequency and p is the number of poles

Since frequency is given as 80 Hz and the motor speed also given as 1000 rpm then making p the subject of the above formula we get

By substitution

To find the slip, we now use the actual and since we know that and p=8 then

The motor speed is now

To find slip, we use the formula

Then by substitution

Therefore, slip=16.67%

explanation:

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answer:

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Explanation: