Progress 1030

Question 1

Substance on which a physical object is composed is ___

Answer 1

Matter

Question 2

Matter is composed of fundamental substances called

Answer 2

Elements

Question 3

The smallest particle of an element that can exist alone or in combination is called

Answer 3

An atom

Question 4

The smallest particle of a substance that maintains the properties of that substance is

Answer 4

a molecule

Question 5

The law of electric charges states that like charges _____ and unlike charges ______

Answer 5

Repel ; Attract

Question 6

______ is the cause static electricity

Answer 6

Friction

Question 7

A material with free electrons is called a

Answer 7

Conductor

Question 8

A material that retards the flow of electrons is called

Answer 8

An insulator

Question 9

________, ________, and ________ are all terms used to describe electric pressure

Answer 9

Voltage, potential difference, and electromotive force

Question 10

______ flows in one direction

Answer 10

Direct current

Question 11

________ is supplied to most residences.

Answer 11

AC or alternating current

Question 12

Current flow is measured in

Answer 12

Amperes

Question 13

The opposition to electron flow is

Answer 13

Resistance

Question 14

The rate at which electrons do work is

Answer 14

Power or electrical power

Question 15

The measurement of power in an electrical circuit is

Answer 15

Watt or kilowatt

Question 16

______ is the BTU output of the equipment divided by the power input with a seasonal adjustment.

Answer 16

Seer (seasonal energy efficiency rating)

Question 17

The mathematical relationship between the current electromotive force and resistance of electric circuit is known as

Answer 17

Ohms law

Question 18

Which of the following is produced around a conductor when current flows through the conductor?

Answer 18

Magnetism

Question 19

What are the results of clamping a clamp on ammeter around more than one conductor, specifically L1 and L2?

Answer 19

No reading

Question 20

If a conductor was wrapped around the jaws of a clamp of an ammeter four times, the proper reading would be what if the meter was reading 16 amps

Answer 20

4 amps

Question 21

When a circuit has a complete unbroken path, it is said to have

Answer 21

Continuity

Question 22

The most popular conductor used in the HVAC industry is

Answer 22

Copper

Question 23

The source of power must always be off when you’re reading ____

Answer 23

Resistance

Question 24

Power from the thermostat to fan relay coil. What color is that?

Answer 24

Green

Question 25

Power from the thermostat to the gas valve for our heating is what color

Answer 25

White

Question 26

Power from the transformer to the thermostat is what color

Answer 26

Red

Question 27

Power from the thermostat to the condensing unit relay or coil contactor is what color

Answer 27

Yellow

Question 28

What is our line 1 voltage? High power color is

Answer 28

Black

Question 29

What colors are ground for high power?

Answer 29

Green

Question 30

What colors is line 2 voltage for high power?

Answer 30

Red

Question 31

What color is neutral for high power?

Answer 31

White

Question 32

Air conditioning equipment is designed to operate at a voltage of plus or minus what percent

Answer 32

10%

Question 33

What would be the resistance of a circuit that is open?

Answer 33

Infinite

Question 34

What would be the resistance of a motor winding that is shorted?

Answer 34

0

Question 35

What’s be a resistance of a good motor?

Answer 35

20 ohms and 70 ohms (B & C)