Which of the aforementioned machinery transforms electrical energy into mechanical energy?

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dynamo

transformer

electric motor

inductor

answer is C.

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Detailed Solution

Electric motor: An electric motor is a device that transforms electrical energy into mechanical energy. A dynamo is an apparatus that transforms mechanical energy into electrical energy. Option 1 is thus untrue.

A transformer is used to convert high voltage to low voltage and low voltage to high voltage (or low current). Option 2 is thus erroneous.

It is evident from the foregoing that an electric motor is a mechanism that transforms electrical energy into mechanical energy. As a result, choice three is right.

Inductors are wire coils that are twisted around hollow tubes or any ferromagnetic material with an iron core to boost their inductive value. Option 4 is therefore erroneous.

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