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The PWM control of DC motor varies _________

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The PWM control of DC motor varies _________

(a) linearly with speed

(b) inversely with speed

(c) parabolically with speed

(d) exponentially with speed

I have been asked this question in an online quiz.

This key question is from Speed Control of DC Motors in division DC Motors of Electrical Machines

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Best answer
Right choice is (a) linearly with speed

The best explanation: In PWM technique duty ratio is a linear function with respect to speed.

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