Mechanical Concepts Flashcard

Front

A positive charge is an electrical charge produced when there are more electrons than protons in an atom.

Back

False

Front

An insulator is a material that has a very high electrical resistance and resists the flow of electrons.

Back

True

Front

AC voltage is used in almost all portable equipment, such as automobiles, golf carts, flashlights, and cameras. True, False, Only in some cases, None of the above

Back

False

Front

Power (P) is equal to voltage (E) times current (I).

Back

True

Front

Flux is most dense at the middle of a magnet.

Back

False

Front

DC can be generated using electromagnetic induction.

Back

False

Front

Never touch any part of a victim's body if the victim is in contact with a circuit.

Back

True

Front

A brush is a ring made of insulated segments that keep the armature windings in the correct polarity to interact with the main fields in a DC generator.

Back

False

Front

Three-phase AC voltage is a combination of three alternating voltage waveforms, each displaced 90 electrical degrees apart.

Back

False

Front

This is a series circuit.

Back

False