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Calculate the number of paired poles if the frequency id 15kHz and the number of revolutions is 300.

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in Basic Electrical Engineering by (88.7k points)
Calculate the number of paired poles if the frequency id 15kHz and the number of revolutions is 300.

(a) 10

(b) 30

(c) 50

(d) 70

The question was asked in an interview for internship.

This is a very interesting question from Relationship between Frequency, Speed and Number of Pole Pairs topic in division Alternating Voltage and Current of Basic Electrical Engineering

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Right answer is (c) 50

The explanation is: We know that f=p*n

f=15kHz=15000Hz, n=300

15000=p*300 =>  p=15000/300=50.

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