AC Service Quiz
AC Service Expertise Quiz
Test your knowledge on AC service and refrigeration systems with our engaging quiz designed for HVAC professionals and enthusiasts alike. Challenge yourself with ten multiple-choice questions that cover essential principles and applications in HVAC.
Topics include:
- Refrigerant Behavior
- System Maintenance
- Compressor Types
- Dehydration Methods
- Electrical Components
The state of the refrigerant leaving the liquid receiver of the refrigeration system is a ???
High pressure liquid
High pressure gas
Low pressure gas
Low pressure liquid
In order to remove the moisture that enters a refrigeration system during repair, you must evacuate the system by using a ???? To make all the moisture vaporize.
Charging hose
Torch
Vacuum pump
Manometer
What occurs in an evaporator?
Latent heat is released
The refrigerant absorbs the latent heat
Latent heat is condensed
The refrigerant evaporates the latent heat
You can pin-point leaks in a new refrigeration system by charging the system with ???? And using a ????.
Ammonia; leak detector
Nitrogen; soap solution
Halocarbon; vacuum pump
Oxygen; gauge manifold
To check the charge in a refrigeration system, you can look at the ???? In the liquid line. If the charge is low, you will probably see ????.
Metering device; frost
Sight glass; bubbles
Metering device; moisture
Sight glass; no bubbles
Which of the following is NOT a type of compressor?
Lateral
Reciprocating
Rotary
Centrifugal
In using the deep-vacuum method of dehydrating a refrigerant system, you lower the pressure to about ???? Microns or less. With the vacuum pump turned off, a gradual rise in pressure tells you the system is ????.
1000; dry
1000; not dry
50000; leaking
50000; normal
Voltage is flowing through a 120VAC switch. What will be the measured voltage across the switch if it is closed?
120 VAC
0 VAC
0 Ohms
None of the above
Slugging is the entry of ???? Refrigerant into a compressor. Cavitation is the formation and collapse of ???? In a liquid flowing under pressure.
Gaseous; solid particles
Liquid; solid particles
Gaseous; vapor pockets
Liquid; vapor pockets
What is the purpose of a crankcase heater?
Keep refrigerant out of the oil
Maintain low pressure in the compressor
Maintain high pressure in the compressor
Superheat the refrigerant entering the compressor
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