
ACR-206 Final Exam
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Other
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Professional Development
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Practice Problem
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Hard
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1.
FLASHCARD QUESTION
Front
The __________ typically disables the A/C system if pressures fall below 10 psi (69 kPa).
Back
Low-pressure switch
2.
FLASHCARD QUESTION
Front
Which of the following is the most common source of abnormal noises arising from the air conditioner? Evaporator, Compressor, Accumulator, Muffler
Back
Compressor
3.
FLASHCARD QUESTION
Front
Which of the following is the first step in the diagnostic process for air-conditioning systems? System pressure test, Diagnosis of faults, Performance testing, Check for codes in the computer
Back
Performance testing
4.
FLASHCARD QUESTION
Front
A __________ is connected to the air-conditioning refrigerant ports before the performance test begins.
Back
Manifold pressure gauge set
5.
FLASHCARD QUESTION
Front
Which of the following works very well for testing discharged systems or for pre-checking for a leak after repairs have been made and before recharging the system? Fluorescent dye, Oxygen, Compressed Air, Nitrogen
Back
Nitrogen
6.
FLASHCARD QUESTION
Front
Which of the following is NOT a method of leak testing? Select one: Vacuum testing, Electronic leak detection, Dye testing, Nitrogen testing
Back
Vacuum testing
7.
FLASHCARD QUESTION
Front
Flushing with __________ may be necessary for some components, as this removes moisture-laden oil and some contaminated oil.
Back
Refrigerant gas
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