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The speed of a BLDC motor can be controlled by __________

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in Electric Drives by (99.8k points)
The speed of a BLDC motor can be controlled by __________

(a) Changing input DC voltage

(b) Changing temperature

(c) Changing wind direction

(d) Cannot be controlled

I got this question in an international level competition.

My question is from Solid State Controlled Drives in chapter Introduction to Solid State Controlled Drives of Electric Drives

1 Answer

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The correct answer is (a) Changing input DC voltage

To elaborate: The speed of a BLDC motor can be controlled by changing the input DC voltage or the current using PWM. It can be achievable by using a transistor and chopper.

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