Free Practice Quiz Question List

5 Universal Certification Review and Practice Online Quiz Questions

Use this free practice quiz with 20 questions to review 5 Universal Certification Review and Practice, test your knowledge, and prepare for your next test or exam.

20 questions

Choose one

1 point

In which component does high-pressure refrigerant vapor reject heat and become liquid?

A
Evaporator
B
Condenser
C
Compressor
D
Metering device

Fill in the blank

1 point

During the metering stage, the expansion device reduces the liquid refrigerant's pressure before it returns to the .

Written response

1 point

What process cleans recovered refrigerant for reuse, generally through oil separation and filtration or drying?

Written response

1 point

What is the maximum refrigerant charge, in pounds, included in the general definition of a small appliance?

Choose one

1 point

A technician needs to determine a system's saturation temperature from its pressure. Which approach is appropriate?

A
Use any refrigerant's chart because pressure readings are interchangeable.
B
Use a chart only when the system contains a blend.
C
Use the chart for the specific refrigerant in the system.
D
Use the same chart for all refrigerants if the pressure gauge is calibrated.

Choose all

1 point

Select all appropriate recovery-cylinder practices.

A
Use approved, refillable recovery cylinders.
B
Refill a disposable cylinder if it is clearly labeled.
C
Leave room for liquid expansion and follow the cylinder's fill limit.
D
Secure cylinders during storage and transport.
E
Use required markings and follow hazardous-material shipping rules.
F
Fill a recovery cylinder completely to avoid making extra trips.

Choose one

1 point

A technician must pressure-test a system where appropriate. Which procedure best follows the stated safety guidance?

A
Use dry nitrogen with a regulator and suitable pressure-relief protection, without exceeding the permitted test pressure.
B
Use oxygen at low pressure and rely on the gauge to prevent overpressure.
C
Use compressed air because it is easier to obtain.
D
Use refrigerant from another appliance to pressurize the system.

Fill in the blank

1 point

During evacuation of a water-cooled low-pressure chiller, circulate or remove from the tubes as needed to prevent freezing.

Choose all

1 point

Select all correct statements about the Universal certification exam structure and requirements.

A
The exam structure includes 25 Core questions.
B
The exam structure includes 25 questions for each equipment-specific type.
C
The four sections together contain 100 questions.
D
A closed-book exam requires a score of at least 70 percent.
E
The Core exam does not need to be proctored for Universal certification.
F
A Type I mail-in exam can be used toward Universal certification.

Open ended

1 point

After a high-pressure appliance reaches its required recovery vacuum, its pressure rises during the rebound check. What does this suggest about the refrigerant, and why does that matter?

Choose one

1 point

A technician argues that a recovery or evacuation method allowed for a particular small-appliance disposal activity means certification is unnecessary for servicing the appliance. Which response is best?

A
The exception means certification is never required for small appliances.
B
The exception for a particular disposal activity does not generally permit service work without the required certification.
C
The exception automatically qualifies the technician for Universal certification.
D
The exception applies only if refrigerant is intentionally vented.

Written response

1 point

CFCs and HCFCs can reach which atmospheric layer, where ultraviolet light frees chlorine that contributes to ozone depletion?

Choose one

1 point

A technician is tracing a system to locate where refrigerant absorbs heat and boils from liquid into vapor. Which component should the technician identify?

A
The compressor, where vapor pressure and temperature rise
B
The evaporator, where low-pressure liquid boils into vapor
C
The condenser, where vapor rejects heat and becomes liquid
D
The metering device, where liquid pressure is reduced

Choose one

1 point

A technician wants certification covering small appliances, high- and very-high-pressure appliances, and low-pressure appliances, along with shared Core material. Which certification meets that scope?

A
Core and Type I only
B
Types I and II only
C
Core and Types II and III only
D
Core and Types I, II, and III

Choose one

1 point

A technician is deciding whether an appliance falls within the general Type I small-appliance category. Which description fits that category?

A
It is factory-charged, hermetically sealed, and contains five pounds or less of refrigerant.
B
It is any appliance with a charge greater than five pounds.
C
It is a low-pressure appliance, regardless of its charge.
D
It is a motor-vehicle air conditioner with a factory-sealed system.

True or false

1 point

True or false: When recharging a low-pressure chiller, introducing vapor before liquid helps reduce the risk of freezing water in the tubes.

A
True
B
False

Choose one

1 point

A technician needs to pressure-test a system when appropriate. Which setup follows the recommended gas and pressure-control precautions?

A
Compressed air with a regulator
B
Oxygen at a pressure below the appliance limit
C
Dry nitrogen with a regulator and suitable pressure-relief protection
D
Refrigerant recovered from another appliance

Written response

1 point

Under the EPA evacuation table, what vacuum level applies to a high-pressure appliance charged with 200 pounds or more when using recovery equipment made after November 15, 1993? Enter the value in inches of mercury vacuum.

True or false

1 point

A low-pressure chiller is operating below atmospheric pressure in part of its cycle. If a leak develops there, air and moisture can enter the system.

A
True
B
False

True or false

1 point

A technician confirms that a hermetic compressor is under vacuum and plans to energize it briefly to check its operation. This is an acceptable practice.

A
True
B
False

5 Universal Certification Review and Practice Online Quiz Questions

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