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Free Practice Quiz Question List

3 Safety and Environmental Practices Online Quiz Questions

Use this free practice quiz with 20 questions to review 3 Safety and Environmental Practices, test your knowledge, and prepare for your next test or exam.

20 questions
01
True or false
1 point

True or false: Under EPA Section 608, a factory-made, factory-charged, hermetically sealed appliance containing five pounds or less of refrigerant meets the definition of a small appliance.

  1. A

    True

  2. B

    False

02
True or false
1 point

True or false: Once a small appliance is unplugged, its capacitors can be assumed to be safe to touch.

  1. A

    True

  2. B

    False

03
True or false
1 point

True or false: If an appliance is switched off, no further energy-isolation steps are needed before service that could expose a worker to unexpected startup or stored energy.

  1. A

    True

  2. B

    False

04
Choose one
1 point

A technician is assigned service work that may compromise a small appliance’s refrigerant circuit. Which statement best describes the certification requirement?

  1. A

    Any electrical or mechanical repair requires Section 608 certification, even when the refrigerant circuit is not affected.

  2. B

    A person who may compromise the refrigerant circuit generally needs the appropriate Section 608 certification.

  3. C

    Section 608 certification is needed only when refrigerant is intentionally released.

  4. D

    Certification is never needed when servicing a factory-sealed appliance.

05
Fill in the blank
1 point

An apprentice may work on a task that may compromise the refrigerant circuit under of a certified technician.

06
Choose all
1 point

Before opening an appliance, which information should a technician identify from the nameplate and service information? Select all that apply.

  1. A

    The refrigerant and its charge

  2. B

    The technician’s preferred recovery method, regardless of equipment instructions

  3. C

    The appliance’s electrical supply

  4. D

    Any special hazards identified for the appliance

07
Written response
1 point

As an alternative to the percentage-based recovery requirements for a small appliance, to what vacuum value may the appliance be evacuated? Enter the number in inches of mercury vacuum.

08
Choose one
1 point

A technician is relying on unplugging a cord-and-plug appliance as the energy-isolation method. What should the technician do with the connection?

  1. A

    Leave the plug where any bystander can reach it.

  2. B

    Rely on the appliance’s off switch while working on electrical parts.

  3. C

    Keep the cord-and-plug connection under your exclusive control.

  4. D

    Disconnect the cord only after testing begins.

09
Choose all
1 point

Before connecting recovery equipment, which actions help reduce hazards and prevent refrigerant mix-ups? Select all that apply.

  1. A

    Confirm the recovery equipment is approved for the refrigerant.

  2. B

    Inspect hoses and fittings.

  3. C

    Use any available cylinder, even if it is not labeled for the refrigerant.

  4. D

    Use the correct, properly labeled recovery cylinder.

10
Fill in the blank
1 point

In a small or poorly ventilated area, released refrigerant vapor can .

11
Choose one
1 point

A technician suspects a refrigerant leak in a small, poorly ventilated area and is concerned the atmosphere may be unsafe. What is the safest response?

  1. A

    Continue working while opening the appliance to locate the leak.

  2. B

    Stop work and do not enter a potentially oxygen-deficient space to attempt a rescue without proper training and equipment.

  3. C

    Enter immediately if the space appears clear.

  4. D

    Use a standard dust mask and continue the repair.

12
Open ended
1 point

If energized testing is necessary during appliance service, describe who may perform it, what safeguards are required, and what must happen before hands-on work continues.

13
Choose one
1 point

Before servicing an appliance, which work-area preparation best addresses the risks of poor visibility and unexpected appliance movement?

  1. A

    A dry, well-lit area is sufficient even if the appliance could tip during service.

  2. B

    A stable, dry, well-lit area with the appliance secured against tipping or movement.

  3. C

    A clear area is unnecessary if the appliance is disconnected from power.

  4. D

    An appliance should be left unsecured so it can be repositioned quickly.

14
Written response
1 point

Which EPA Section 608 certification type covers servicing small appliances?

15
Choose one
1 point

An appliance is unplugged, but you need to work near its capacitor. What is the safest approach?

  1. A

    Assume unplugging has discharged every capacitor.

  2. B

    Short the capacitor terminals with a screwdriver before touching other parts.

  3. C

    Treat the capacitor as potentially charged and discharge it only by the approved method.

  4. D

    Touch the capacitor briefly with insulated gloves to check whether it is charged.

16
Choose one
1 point

A nameplate identifies a refrigerant with flammability hazards. What should a technician do before connecting recovery equipment?

  1. A

    Use any recovery machine that fits the service hoses.

  2. B

    Confirm the equipment is approved for the appliance and its refrigerant, including any flammability considerations.

  3. C

    Choose equipment based only on the appliance's electrical supply.

  4. D

    Use equipment approved for a different refrigerant if the refrigerants have similar names.

17
Written response
1 point

For a small appliance with a functional compressor, what percentage of refrigerant must be recovered when using recovery equipment manufactured on or after November 15, 1993?

18
Choose one
1 point

A suspected refrigerant leak may have created an oxygen-deficient atmosphere in a small room, and someone may need help inside. What should an untrained, unequipped worker do?

  1. A

    Stop work and do not enter a potentially oxygen-deficient space to attempt a rescue unless properly trained and equipped.

  2. B

    Enter quickly to remove the person, then improve ventilation.

  3. C

    Continue working if the refrigerant is no longer visibly escaping.

  4. D

    Use a respirator only if the area is outdoors.

19
Choose one
1 point

A technician unplugs an appliance before servicing it, but another person could reconnect it. Which practice best controls the risk of unexpected startup?

  1. A

    Turn the appliance off at its control switch and begin work.

  2. B

    Unplug it, then leave the plug where anyone can reconnect it.

  3. C

    Follow the applicable lockout/tagout procedure when required; if relying on unplugging, keep the cord-and-plug connection under your exclusive control.

  4. D

    Use a warning label instead of controlling the power source.

20
Written response
1 point

For a small appliance with a nonfunctional compressor, what recovery percentage applies when using recovery equipment manufactured on or after November 15, 1993? Enter the percentage-point value.