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WorksheetsAutomotive Air-Conditioning Quiz
Total questions: 20
Worksheet time: 10mins
The Clean Air Act (CAA) ________.
Mandates that each shop maintain a current government-issued license
Outlines the specific refrigerants that can be safely used for each application
Sets the standards for shops that do air-conditioning work
All of the above
The 609 license never expires.
True
False
The 609 license ensures that the technician knows how to repair the automotive air-conditioning systems.
True
False
Section 609 of ________ the federal law that regulates air emissions from stationary and mobile sources contains all of the motor vehicle air-conditioning (MVAC) requirements and laws.
The OSHA code and compliance guidelines
The Clean Air Act (CAA)
The Department of Transportation (DOT)
None of the above
The ________ of the refrigerant system is designed to allow easy transformation of the refrigerant from a liquid to a gas.
High side
Low side
Medium side
None of the above
The amount of heat required to raise the temperature of 1 pound of water at 32°F (0°C) and at atmospheric pressure by 1°F would be:
When the pressure of a gas is raised, its temperature:
goes down.
remains unchanged.
goes up.
becomes unstable.
Radiation describes the amount of heat it takes to move temperature up or down in degrees.
True
False
The A/C compressor clutch is engaged and disengaged by using:
hydraulic pressure.
vacuum.
compressed air.
electromagnetism.
The air-conditioning hose connections are secured to the hose using special unions known as ______ that must be carefully assembled to avoid leaks.
Wobbles
Billets
Crimps
Baffles
The A/C condenser is normally positioned:
in front of the radiator.
behind the radiator.
in the cabin air box.
on the firewall.
______, a member of the CFC family of gases, was the first common refrigerant to be used in an automotive air-conditioner.
HFC-134ayf
Tetrafluoroethane (R-134a)
Dichlorodifluoromethane (R-12)
Pentafluoroethane (R-410a)
Fixed orifice tube automotive air-conditioning systems use a(n) ______ to ensure that a pure gas is delivered to the compressor.
Thermal expansion valve
Evaporator
Condenser
Accumulator
The ______ is installed on the low-pressure refrigerant line or the accumulator to turn the air-conditioning clutch on and off at certain pressures.
Pressure cycling switch
Fixed orifice tube
Accumulator
Variable-pressure cycling switch
When the compressor switches on, the suction from the compressor removes refrigerant vapor from the evaporator and ______ pressure.
Lowers
Raises
Varies
None of the answers listed
The fixed orifice tube in an A/C system is a metering device that forces a high-pressure gas into a low-pressure gas.
gas into a low-pressure gas.
gas into a low-pressure liquid.
liquid into a low-pressure liquid.
liquid into a low-pressure gas.
The resistor pack or resistor block uses resistors in ________ to regulate the speed of the blower motor fan.
Parallel
Series
Modified parallel
All of the answers listed
When the pressure on hot coolant (above 212°F) is lowered, it:
leaks out.
boils instantly.
forms a gel-like substance.
None of the answers listed.
Servos are devices designed to:
do work.
cool.
heat.
charge A/C systems.
A vehicle's heating and ventilation blend doors can be operated ________.
Mechanically
By vacuum
By Electric motors
All of the above
