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NJ QPA EXAM (UPDATED) QUESTION A ND
ANSWERS 100% CORRECT
Question : For a shop that already does air conditioning service
and wants to start working on HFO-1234yf, they will need:
A HFO-1234yf recovery, recycling and recharging machine The service technicians to be Section 609 certified A well-ventilated work area All of the above
Correct answer: All of the above
Question : Tech A states that an accumulator A/C system may
require additional time and precautions to remove the entire amount refrigerant. Tech B states that all types of MVAC systems take the same recovery time. Who's correct?Tech A Tech B Both Neither
Correct answer: Tech A
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Question : HHFC-134a purity standards require R/R/R machines
to remove which of the following contaminants from recovered
refrigerant:
Oil Moisture Air All of the above
Correct answer: All of the above
Question : Using a refrigerant identifier greatly improves your
ability to determine if you have the right type of refrigerant and the purity of that refrigerant.No, it has no advantage No, it allows you to determine if the system is at correct pressure No, it's for topping off the system Yes, it allows you to determine the type of refrigerant
Correct answer: Yes, it allows you to determine the type of
refrigerant
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Question : When should you replace the recycling equipment
filter?Every month of operation Once every 25 completed jobs Every 6 months of operation According to the manufacturer's specifications
Correct answer: According to the manufacturer's specifications
Question : To meet the SAE J2791 standard, electronic leak
detectors must have the capability of identifying leakage as low
as:
- oz. per year
- oz. per year
0.5 oz. per year 0.15 oz. per year
Correct answer: 0.15 oz. per year
Question : Which of the following is the LEAST accurate way
to charge an A/C system?Use the pressure gauges and the evaporator temperature to evaluate the refrigerant level
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Install the amount of refrigerant specified in the vehicle factory manual Adding refrigerant until the air is cold out of the vents Recover, vacuum, recharge the system to the manufacturer's specifications
Correct answer: Adding refrigerant until the air is cold out of the
vents
Question : Two technicians are discussing air in an A/C system.
Tech A says air can lead to poor A/C performance. Tech B says that air in the refrigerant can make the system run at a higher pressure. Who's correct?Tech A Tech B Both Neither
Correct answer: Both
Question : A technician has recovered R-134a from a vehicle
using an R/R/R machine. During the 5 minute pause, the low side gauge rises slightly from vacuum into pressure. Following
