Free Practice Quiz Question List

2 Refrigeration Fundamentals and Environmental Responsibility Online Quiz Questions

Use this free practice quiz with 20 questions to review 2 Refrigeration Fundamentals and Environmental Responsibility, test your knowledge, and prepare for your next test or exam.

20 questions

Written response

1 point

What is the maximum refrigerant charge, in pounds, allowed for an appliance to meet the EPA Section 608 small-appliance definition? Enter the numerical limit.

Choose one

1 point

In a vapor-compression refrigerator, what happens to the refrigerant as it passes through the expansion device?

A
It raises the refrigerant's pressure and temperature before it enters the condenser.
B
It lowers the liquid refrigerant's pressure as it enters the evaporator.
C
It absorbs heat from the refrigerated space and boils the refrigerant.
D
It releases heat to the surrounding air and condenses the refrigerant.

Written response

1 point

Which component releases heat to the surrounding air as refrigerant condenses into liquid?

Choose one

1 point

A technician is comparing refrigerant options. Which statement best reflects the environmental and safety tradeoffs described for these refrigerant groups?

A
All HFCs deplete stratospheric ozone, while hydrocarbons are never flammable.
B
CFCs and HCFCs have no effect on stratospheric ozone, while HFCs are always nonflammable.
C
Many HFCs do not deplete ozone but can be powerful greenhouse gases; some hydrocarbons may have lower climate impact but can be flammable.
D
Every refrigerant has the same environmental impact and safety requirements.

Choose one

1 point

Which description meets the EPA Section 608 definition of a small appliance?

A
It must be factory-manufactured, charged, and hermetically sealed, with 5 pounds or less of refrigerant.
B
It qualifies whenever its physical size is small, regardless of how it was manufactured or charged.
C
It must be hermetically sealed and contain less than 50 pounds of refrigerant.
D
It must be factory-manufactured and contain any amount of refrigerant, provided it is used in a home.

True or false

1 point

True or false: Smell alone is a reliable way to identify which refrigerant is in an appliance.

A
True
B
False

Written response

1 point

Under the EPA Section 608 definition, what is the maximum refrigerant charge, in pounds, for an appliance to qualify as a small appliance?

Choose one

1 point

Which worker generally needs EPA Section 608 Type I certification for the described work?

A
A person who only cleans the outside of an appliance without working on its refrigerant circuit.
B
Anyone who transports a discarded appliance, regardless of the work performed.
C
A person who disposes of a small appliance, solely because it is being discarded.
D
A person who attaches or removes service hoses while servicing a small appliance.

Choose one

1 point

A small appliance has a nonfunctioning compressor, and the recovery equipment was made on or after November 15, 1993. Which recovery percentage is specified as one of the applicable methods?

A
Recover 80% of the refrigerant.
B
Recover 90% of the refrigerant.
C
Recover 100% of the refrigerant in every case.
D
Recover 4% of the refrigerant.

True or false

1 point

True or false: When equipment is discarded, the final person in the disposal chain must ensure refrigerant was properly recovered or verify that it was recovered earlier.

A
True
B
False

Choose one

1 point

In a vapor-compression refrigerator, what does the compressor do to the refrigerant?

A
It absorbs heat from the refrigerated space and boils into vapor.
B
It draws in refrigerant vapor and raises its pressure and temperature.
C
It lowers the liquid refrigerant's pressure before it enters the evaporator.
D
It keeps the appliance's airflow path clear.

Choose one

1 point

A refrigerator cools poorly, its compressor runs unusually long, and oily residue appears near a tubing joint. What is the best conclusion?

A
The symptoms prove the tubing has a refrigerant leak.
B
The symptoms show that the refrigerant must be replenished.
C
The symptoms are clues that warrant investigation but do not by themselves prove a leak.
D
The symptoms rule out electrical, airflow, control, and door-seal problems.

Choose one

1 point

Which statement best describes Section 608's general rule on intentionally venting refrigerant during maintenance, service, repair, or disposal?

A
Intentionally venting refrigerant during covered maintenance, service, repair, or disposal is generally prohibited.
B
Intentionally venting is permitted whenever a technician is working on a small appliance.
C
Intentionally venting is permitted if the appliance is not cooling.
D
Intentional venting is permitted whenever the technician believes the release will be small.

Choose all

1 point

Select all practices recommended for responsible refrigerant handling.

A
Keep the refrigerant circuit sealed when possible.
B
Use proper recovery equipment and low-loss connections.
C
Release a small amount of refrigerant deliberately to simplify servicing.
D
Avoid mixing refrigerants.

Choose all

1 point

Select all symptoms identified as possible clues of a refrigerant leak or refrigeration-system fault.

A
Declining cooling.
B
Unusually long compressor operation.
C
Oily residue near a joint.
D
Any one of these symptoms proves that refrigerant has leaked.

True or false

1 point

A refrigerator's vapor-compression cycle creates cold rather than moving heat from one place to another.

A
True
B
False

Written response

1 point

Which component absorbs heat from the refrigerated space as low-pressure refrigerant boils into vapor? Enter the component name.

Fill in the blank

1 point

In a basic vapor-compression system, the is where low-pressure refrigerant absorbs heat from the refrigerated space and boils into vapor.

Fill in the blank

1 point

Good refrigerant-handling practice includes avoiding refrigerants.

Open ended

1 point

A refrigerator cools poorly, runs for unusually long periods, and has oily residue near a tubing joint. Explain what can and cannot be concluded from these symptoms, and describe appropriate next steps before anyone works on the refrigerant circuit.

2 Refrigeration Fundamentals and Environmental Responsibility Online Quiz Questions

Related study packs and tools