WorksheetsHAC 101 Assessment
Total questions: 19
Worksheet time: 10mins
The Clean Air Act (CAA)......
a. Mandates that each shop maintain a current government-issued license
b. Outlines the specific refrigerants that can be safely used for each application
c. Sets the standards for shops that do air-conditioning work
d. 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.
a. The OSHA code and compliance guidelines
b. The Clean Air Act (CAA)
c. The Department of Transportation (DOT)
d. None of the above
The _________ of the refrigerant system is designed to allow easy transformation of the refrigerant from a liquid to a gas.
medium side
high side
low 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:
a. 1 kelvin.
b. 1 Btu.
c. 1 joule.
d. 1 rankine.
When the pressure of a gas is raised, its temperature:
a. goes down.
b. remains unchanged.
c. goes up.
d. 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:
a. hydraulic pressure.
b. vacuum.
c. compressed air.
d. electromagnetism.
The air-conditioning hose connections are secured to the hose using special unions known as to avoid leaks.
a. Wobbles
b. Billets
c. Crimps
d. Baffles
The A/C condenser is normally positioned:
a. in front of the radiator.
b. behind the radiator.
c. in the cabin air box.
d. on the firewall.
A member of the CFC Family of gases, was the first common refrigerant to be used in an automotive air conditioner...
a. HFO-1234yf
b. Tetrafluoroethan (R-134a)
c. Dichlorodifluoromethane (R-12)
d. Pentafluoroethane (R-410a)
Fixed orifice tube automotive air-conditioning systems use a(n) ______ to ensure that the purge gas is delivered to the compressor.
a. Thermal expansion valve
b. Evaporator
c. Condenser
d. Accumulator
The ______ is installed on the low pressure refrigerant line or the accumulator to turn the air- conditioning clutch on or off at certain pressures.
a. Pressure cycling switch
b. Fixed orifice tube
c. Accumulator
d. Variable-pressure cycling switch
When the compressor switches on, the suction from the compressor removes refrigerant vapor from the evaporator and pressure.
a. Lowers
b. Raises
c. Varies
d. None of the answers listed
The fixed orifice tube in an A/C system is a metering device that forces a high-pressure:
a. gas into a low-pressure gas.
b. gas into a low-pressure liquid.
c. liquid into a low-pressure liquid.
d. liquid into a low-pressure gas.
The resistor pack or resistor block uses resistors in Select one:
a. Parallel
b. Series
c. Modified parallel
d. All of the answers listed
Servos are devices designed to:
a. do work.
b. cool.
c. heat.
d. charge A/C systems.
A vehicle's heating and ventilation blend doors can be operated
a. Mechanically
b. By vacuum
c. By Electric motors
d. All of the above
