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what is Rheostat ?

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Variable resistor
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Rheostat is varible resistance device which gives large range variation in resistance generally used for operating electrical motors
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Description : A rheostat differs from potentiometer in the respect that it?

Answer : A rheostat differs from potentiometer in the respect that it has higher wattage rating.

Answer : During rheostat braking of D.C. series motors motor is run as a generator.

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