For three-phase induction motors which of the following is the least efficient method of speed control?

Academy of PakistanTest & Learning

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Academy of PakistanTest & Learning

804Active Users

3059Electrical EngineeringMedium

ARheostat control

BCombination of cascade and pole changing

CPole changing

DCascade control

Correct answer

A. Rheostat control

Explanation

The correct answer is Rheostat control.

For three-phase induction motors which of the following is the least efficient method of speed control? - Answer and Explanation | Academy of Pakistan