HVAC NATE Exams Study Guide 2025: Practice Questions & Answers

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HVAC NATE EXAMS (LATEST 2025 UPDATES BUNDLE

PACKAGE WITH COMPLETE SOLUTIONS) 100%

CORRECT QUESTIONS AND VERIFIED ANSWERS |

GRADE A

Most workplaces injured can be avoided by practicing

.....ANSWER.....Good judgment and Cation

List the types of eye protection that should be worn on the job ,

and the circumstances under which they should be worn

.....ANSWER.....Safety goggles, face shields, spectacles, side

shields

What steps should be taken following a workplace accident?

.....ANSWER.....Must be reported to employers and supervisors

immediately

A record of accident should be kept by the employee and

employer supervisor at the job site

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Effective party should be notified, including the employer and

employee representative, if any

Correct codes in revelation should be review for specifics on

certain accident

For serious accidents, the accident site remain undisturbed until

investigation is completed all tools involved should remain as is

until further notice

Refrigerator, cylinders, bring transported in a van or truck should

be kept in an .....ANSWER.....Upright position

Name four categories of hazardous atmospheres

.....ANSWER.....Flammable, toxic, irritant/corrosive, asphyxiating

Asphyxiation can occur when the oxygen supply is depleted by

either .....ANSWER.....Consumed or displaced

When is it permissible to use improperly sized fuses?

.....ANSWER.....Never

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An electric shock of as little as ______ can cause the inability of

the victim to let go of the circuit .....ANSWER.....5mA

How does a ground-fault circuit interrupter (GFCI) work ?

.....ANSWER.....It stores the load from power source when the

power still active

After you have notified the appropriate personnel that you will

be working on a piece of equipment, what are steps that you

should follow to complete the lockout/ ragout procedure

correctly? .....ANSWER.....Turn off power attach the lockout

device tag it with right warning signs

Electrical fires are classified as _____ fires .....ANSWER.....Class

C

Heat is a from of .....ANSWER.....Energy

Stored energy is called ____________________ energy.

.....ANSWER.....potential

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Energy due to motion is called .....ANSWER.....kinetic energy

Define the work cold .....ANSWER.....Absence of heat

Define the word temperature .....ANSWER.....Kinetic energy of

molecules in any given amount of matter

Heat that you can feel and measure directly with a thermometer

is called .....ANSWER.....Kinetic heat

The heat energy change associated with a please change is

called ______ heat .....ANSWER.....Latent

The amount of heat (BTU) needed to raise the temperature of 1ld

of substance 1F is called ______ of the substance

.....ANSWER.....Specific heat

The latent heat of fusion is the amount of energy required to

change 1LD of substance from the ______ phase to _____ phase

without changing it's temperature .....ANSWER.....Liquid , vapor