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Calculate the pulse number if the supply frequency is 2π and the output frequency is 2π÷3.

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Calculate the pulse number if the supply frequency is 2π and the output frequency is 2π÷3.

(a) 4

(b) 5

(c) 6

(d) 3

I have been asked this question at a job interview.

Question is taken from Solid-State Switching Circuits topic in portion Introduction to Solid-State Switching Circuits of Electric Drives

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Best answer
The correct choice is (d) 3

The best explanation: The pulse number can be calculated using the ratio of input frequency to the output frequency. The value of pulse number (P) is 2π÷(2π÷3)=3. It is a three-pulse converter or 3-Φ phase Half-wave uncontrolled rectifier.

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