Eddy Currents

question 13

Multiple Choice

Eddy currents

• A)are a consequence of changing magnetic flux.
• B)generate heat and result in power loss.
• C)can be used for damping and braking purposes.
• D)are described by both Faraday's and Lenz's laws.
• E)All of these are correct.

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Definitions:

Armature

In electrical engineering, the rotating coil or coils of a dynamo or electric motor.

Brushes

Components made of conductive material that transmit electrical current between stationary wires and moving parts, often found in motors and generators.

Commutator

A rotary electrical switch in certain types of electric motors and generators that periodically reverses the direction of current flow through the rotor.

AC Generator

An alternator in a vehicle that converts mechanical energy into alternating current electricity to power electrical systems.