Deck 5: Components Symbols and Circuitry of Air 252dconditioning Wiring Diagrams

Question 1

Motors are used in the industry to rotate devices such as compressors, condenser fan motors, pumps, and other devices that require rotating movement.

Answer 1

True

Question 2

The schematic diagram is the most useful and easiest to follow of any electric diagram.

Answer 2

True

Question 3

Thermal overload devices operate by magnetism.

Answer 3

False

Question 4

Normally open contacts open and normally closed contacts close when the relay or contactor is energized.

Question 5

The ____________________, used to help the installation electrician to wire the unit properly, gives specific information about terminals, wire sizes, color coding, and breaker or fuse sizes.

Question 6

What is the function of a transformer?

Question 7

A(n) ____________________ is the same type of device as a contactor in terms of the ampere rating of the device, but it has a means of overload protection in it.

Question 8

How does a pressure switch's purpose affect its operation?

Question 9

____________________ are electrical devices that consume electricity to do useful work.

Question 10

A solenoid is not considered to be a load because it consumes very little electricity.

Question 11

Why are thermostats said to be mechanically operated?

Question 12

Loads are devices such as motors, solenoids, resistance heaters, and other current-consuming devices.

Question 13

The term normally refers to the position of a set of contacts when the device is de-energized.

Question 14

What is the purpose of a signal light?

Question 15

A(n) ____________________ is an electrical device that consumes electric energy to rotate a device in an electric system.

Question 16

____________________ are loads found in many systems and wiring diagrams that take electric energy and convert it to heat.

Question 17

A(n) ____________________ is a light that is illuminated to denote a certain condition in a system.

Question 18

The ____________________, also referred to as a label or line diagram, is intended to show the actual internal wiring of the unit.

Question 19

What is the most important part of a heating, cooling, or refrigeration system? Why?

Question 20

The ____________________ is a device that creates a magnetic field when energized and causes some action to an electric component such as a relay or valve.