Physics · Testing of Electrical Machines

Why is the simple brake test generally used for testing small motors only?

Verified Solution4 OptionsUpdated: October 2026👁️1 View

1The simple brake test does not work technically with large motors.
2Large motors have much lower efficiency naturally.
3Large motors produce excessive heat in the brake drum that is difficult to dissipate.✓
4Small motors do not require cooling during the test.

Correct answer

Large motors produce excessive heat in the brake drum that is difficult to dissipate.

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