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4 October, 01:32

In an electric motor, a commutator

a. is made out of dozens of wire loops wrapped around a ferromagnetic core.

b. repeatedly reverses the flow of current through the armature.

is a magnet.

d. is directly connected to the current source.

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Answers (2)
  1. 4 October, 02:06
    0
    b. Repeatedly reverses the flow of current through the armature.

    Explanation:

    The electric motor is a device that converts the electrical energy into mechanical energy. The commutator is a device that repeatedly reverses the flow of current through the armature. It is a split ring that acts as the commutator. It connects the external circuit through a carbon brush and the armature of the motor. Another important component of an electric motor is an electromagnet or permanent magnet.
  2. 4 October, 04:10
    0
    b on edg 2020
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