First slide

Electrical machines and devices

Question

A transformer is used to

Easy

A

Change the alternating potential
B

Change the alternating current
C

To prevent the power loss in alternating current flow
D

To increase the power of current source

Solution

A transformer is a device that transfers electric energy from one alternating-current circuit to one or more other circuits, either increasing (stepping up) or reducing (stepping down) the voltage.

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