Chapter 3 Review

There are two types of Electrical Current:

• IR and UV

• Indoor and Outdoor

• AC and BC

• AC and DC

The main reason for a "switch" is

• to be able to turn it on or off

• to spank your children

• to change the alignment

• to crank it up and down

A power diagram and a ladder diagram are used to:

• make changes to the plan

• sequence the order of operation

• show where the wires end

• make internal programs for other uses

Three measurements made by a multimeter are:

• animal, vegetable, and mineral

• Tic, Tac, Toe

• power, pressure, juice

• voltage, amperage, resistance

A device known as a _________ serves as a brain for the system.

• light switch

• indicator light

• relay

• capacitor

If a mechanic has removed a motor from a circuit, and the circuit still trips the breaker, what should they do next?

• call an electrician

• stand back and watch for fire

• replace the motor

• replace the breaker

The speed of a rotating object can be expressed as _____.

• cycles per second

• revolutions per minute

• pounds per feet

• feet per minute

The switching in polarity between the armature and the brushes in a DC motor that keeps the current flowing in the same direction is called _____.

• armature current

• commutation

• base speed

• flux

"ohm" is the standard unit for what?

• amperage

• current

• resistance

• voltage

According to the diagram, to find the value of "R" I must do what?

• multiply "V" by "I"

• divide "V" by "I"

• multiply "V" by "R"

• divide "V" by "R"