Question 1: A refrigerant system is dehydrated to …………………..
- Remove the oil and vapour
- Remove the water and moisture
- Remove the nitrogen trapped in system
- Remove the refrigerant
EPA 608
NEC 2023
EPA 608 Type 2 Exam Practice Test 4
Free Online EPA 608 Type 2 exam practice test -4
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epa 608 practice tests
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Frequently Asked Questions
Yes — completely free with no account needed.
The EPA 608 certification is required by law for any technician who purchases or handles refrigerants. It covers safe handling, leak detection, recovery, and environmental regulations.
Type I covers small appliances (≤5 lbs refrigerant), Type II covers high-pressure systems, Type III covers low-pressure systems, and Universal covers all three. Most HVAC technicians pursue Universal certification.
You must score at least 70% on each section of the exam. The Universal exam has four parts: core, Type I, Type II, and Type III.
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TimeEPA 608 Type 2 Exam Practice Test 4 — Question List
Question 2: The best method to prevent the freezing of moisture in CFC-12 refrigerant system is to charge with vapor first until the pressure of ………….
- 33 psig
- 48 psig
- 74 psig
- 94 psig
Question 3: Which of the following gas is used to increase the pressure in the system to prevent freezing during evacuation?
- Liquid nitrogen
- Dry nitrogen
- Liquid hydrogen
- Dry hydrogen
Question 4: In the open type compressor the motor is located …………. the compressor body.
- Outside
- Inside
- on
Question 5: A annual leak rate of ……………. % or more should be repaired in food storage refrigeration system which has more than 50 pounds or more charge.
- 15
- 34
- 35
- 18
Question 6: Which of the following is a perfect leak checking method for a built-up system before charging it?
- Pressurizing the system with inert gas
- Pressurizing the system with R-410
- Removing the vacuum using a vacuum pump
- Pressurizing the system with liquid refrigerant
Question 7: Which of the following refrigerant recovery technique minimizes the leakage of the oil in the system?
- Recovering a system in a vapour phase
- Recovering a system in a liquid phase
- Purging the system with pressurised nitrogen before recovery
- Recovering the system in faster mode.
Question 8: In which of the following combination the pressure relief valves should not installed?
- Series
- Parallel
- Vertically
- Horizontally
Question 9: Which of the following component directly following the evaporator in the refrigeration system?
- Receiver
- Metering device
- Accumulator
- Condenser
Question 10: What is the shortcoming of liquid recovery method in the refrigeration system?
- Some liquid remains in the system
- Some vapour remains in the system
- Some oil remains in the system
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