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Mr. Dubey • 53.48K Points
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Q. In dynamic braking, when braking is applied system acts as

(A) freely running machine
(B) motor with slow speed
(C) generator
(D) motor with same speed in opposite direction
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Explanation by: Mr. Dubey 
 the armature is disconnected from the supply and then a braking resistor rb is immediately connected across it. the motor acts as a generator, driven by the inertia and stored kinetic energy dissipating power in rb. this is a simple method of bringing a motor nearly to a standstill.

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