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WorksheetsPrinciples of Heating and Air Conditioning
Total questions: 10
Worksheet time: 5mins
What type of compressor uses two interwoven scrolls?
Variable displacement compressor
Sanden Scroll Compressor
Rotary Vane compressor
Sanden Wobble Plate Compressor
Choose the correct statement with respect to driers.
Driers are circulated in the system.
They absorb any moisture in the system.
They are left open to absorb the moisture.
They are placed in the restriction
All of the following statements with respect to hoses, pipes, and tubes are true except
Heater hose can substitute for air-conditioning hose if needed.
Pipes are used particularly where no give or movement is necessary.
Hoses are slid into the pipes and a crimp is used to fasten them.
All air-conditioning hoses must be a barrier-type hose.
Choose the correct statement with respect to pressure switches.
They are used to display the pressure drop and rise in the system.
They are in parallel connection with the AC compressor
They send inputs to the control module to vary the compressor speed.
They are used to engage and disengage the compressor clutch.
The fixed orifice tube is used for?
sensing changes in temperature.
blocking the flow of liquid refrigerant through the system.
adjusting heat in the cabin.
allowing only a specific amount of liquid refrigerant through at a time.
Which of the following components in the AC transforms low pressure fluid to low pressure gas?
Compressor
Condenser
Restriction
Evaporator
Which of the following components provides the needed refrigerant movement in the system?
Compressor
Condenser
Restriction
evaporator
All of the following are properties of a refrigerant except:
It has a super low boiling point.
It changes its state without breaking down.
It vaporizes and condenses at the correct temperature and pressure.
Its pressure remains unchanged during the cooling cycle.
How does air-conditioning absorb a large amount of heat energy?
By evaporating a liquid
By freezing a liquid
By cooling a liquid
By cooling a gas
Automotive air conditioning service and repair technicians need to have which special license?
409
609
None
Hazmat
