Air Conditioning Certification Exam Part 1.pdf file:///C:/Users/HP/Desktop/New%20fl/Air%20Conditioning%20Cert
Air Conditioning Certification Exam Part 1
1. A technician has found an air conditioning system with a leak in the liquid line. After
the line is repaired, the system is evacuated and properly retired. When the system is
started, the compressor is noisy and running hot. The most probable cause of the noise
is....
Answer Lower oil in the system
2. The standard unit for measuring the quantity of heat in a substance is....
Answer -
The British Thermal Unit (Btu)
3. Zero psia (pounds per square inch absolute) is....
Answer Pressure which cannot be further reduced
4. A liquid receiver is used to....
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,Air Conditioning Certification Exam Part 1.pdf file:///C:/Users/HP/Desktop/New%20fl/Air%20Conditioning%20Cert
Answer Store liquid refrigerant
5. A low refrigerant charge in an air conditioning system will cause these
symptoms...
Answer Low suction pressure and low discharge pressure
6. A TXV sensing bulb which becomes detached from the suction line will cause these
symptoms....
Answer High suction pressure and higher than normal dis- charge pressure
7. In an air conditioning system that uses a thermostatic expansion valve, the
temperature of the evaporator outlet will usually be....
Answer Warmer than the evaporator inlet
8. The oil pressure safety switch is operated by....
Answer The difference between crankcase pressure and oil pressure
9. The sequential order of steps in the vapor - compression process are....
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