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Calculate the value of the frequency of the DC supply.

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Calculate the value of the frequency of the DC supply.

(a) 0 Hz

(b) 50 Hz

(c) 20 Hz

(d) 10 Hz

The question was asked by my school principal while I was bunking the class.

I want to ask this question from Dynamics in section Dynamics of Electrical Drives of Electric Drives

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The correct option is (a) 0 Hz

Explanation: The frequency is defined as the number of oscillations per second. It is reciprocal of the time period. DC supply magnitude is constant. It does not change with time so the frequency of DC supply is 0 Hz.

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