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Calculate the number of revolutions if the frequency is 15kHz and the paired poles are 50.

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Calculate the number of revolutions if the frequency is 15kHz and the paired poles are 50.

(a) 100

(b) 200

(c) 300

(d) 400

This question was addressed to me during a job interview.

Query is from Relationship between Frequency, Speed and Number of Pole Pairs in portion Alternating Voltage and Current of Basic Electrical Engineering

1 Answer

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The correct option is (c) 300

To explain: We know that f=p*n

f=15kHz=15000Hz, p=50

15000=50*n => n=15000/50=300.

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