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In dynamic braking, when braking is applied system acts as ___________

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in DC Machines by (506k points)
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

This question was posed to me in an interview.

The above asked question is from Braking of DC Motors in division DC Motors of DC Machines

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Right choice is (c) Generator

Explanation: 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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