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MACS Certification Exam Practice Questions and Answers (100% Pass)
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MACS Certification Exam Practice Questions and Answers (100% Pass)
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©PREP4EXAMS@2024 [REAL EXAM DUMPS] Tuesday, July 23, 2024 10:52 AMMACS Certification Exam Practice
Questions and Answers (100% Pass)
If the mechanic's gauges rise from a vacuum to pressure, what is required? - ✔️✔️Additional
recovery
What is the only way to fully clear moisture from the A/C system? - ✔️✔️Replacing the desiccant
Pressure ______ the boiling point - ✔️✔️Raises
Vacuum _______ the boiling point - ✔️✔️Lowers
What should you do when replacing hoses? - ✔️✔️Make sure you have the correct type/size of
tubing
What does GWP stand for? - ✔️✔️Global Warming Potential
CO2 is equal to what A/C system? - ✔️✔️R-744
HFO-1234yf systems are acceptable in what kinds of vehicles? - ✔️✔️Passenger cars, light-duty
trucks, medium-duty passenger vehicles, heavy-duty pickup trucks, and complete heavy-duty
vans
HFO-1234yf systems are not acceptable in what kinds of vehicles? - ✔️✔️Heavy-duty trucks,
refrigerated transport, and off-road vehicles such as farm equipment
HFO-1234yf is classified by ASHRAE as what? - ✔️✔️A2L- mildly flammable
R-744 systems operate at ___ to ___ times higher than HFC-134a and HFC-152a systems. -
✔️✔️5 to 10
HFC-152a is ___ - ✔️✔️flammable
What are the 2 types of HFC-152a systems? - ✔️✔️Direct expansion and secondary loop type
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