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WorksheetsWEEK ONE
Total questions: 16
Worksheet time: 19mins
Which refrigerant has zero potential for Ozone Layer Depletion and Global Warming?
R12
R290
R32
R410a
What is the function of Capillary Tube in an AC refrigeration cycle?
Reduces temperature of refrigerant
Compresses gas to ensure circulation
Increases temperature of refrigerant
Converts liquid into gas
What is the function of Compressor in an AC refrigeration cycle?
Absorbs heat from the room
Compresses gas to ensure circulation
Reduces temperature of refrigerant
Converts gas into liquid
What is the function of Evaporator in an AC refrigeration cycle?
Absorbs heat from the room
Compresses gas
Reduces temperature of refrigerant
Reduces temperature of refrigerant
Which is the correct flow of refrigerant in AC?
Condenser - Compressor - Capillary Tube - Evaporator
Compressor - Evaporator - Condenser- Capillary Tube
Capillary Tube - Evaporator - Condenser - Compressor
Evaporator - Compressor - Condenser - Capillary tube
Cooling Capacity of an AC is also known as ………
Star Rating
Tonnage of the AC
ISEER Rating
Units per year
In a Split AC, “Evaporator” is placed in …….
Indoor Unit (IDU)
Outdoor Unit (ODU)
Both IDU and ODU
Evaporator is not a component of Split AC
Chlorofluorocarbons is represented by the abbreviation _________________.
CFC
ChFC
Chl
hydrocarbons
A________ Is a device used to stop the flow of electricity.
Where does the high pressure liquid become a gas?
Evaporator
Condenser
TX valve
Compressor
What are the 4 basic components of all refrigeration system?
Fan motor, compressor, drain pan and condensor
Condensor, compressor, metering devise and filter dryer
Evaporator, condensor, compressor and disconnect
Evaporator, condenser, compressor and meter devise
What is Pressure and state of the refrigerant in the suction pipe?
High pressure vapor
Low pressure vapor
Low pressure liquid
High pressure liquid
True or flase
HVACR equipment is always sized properly by the installing contractor.
True
Flase
Signal Phase condensor fan motor is spinning slowly on and unit that has been in service for 3 years. What is a probably cause?
Bad run capacitor
Wrong voltage
Condenser is dirty
There isn’t enough load to cause the fan motor to come up to speed.
Three forces act on a TXV in order to allow the correct metering of refrigerant, suction pressure, bulb pressure and spring pressure. 2 are closing forces and 1 is an opening force. Which force is the opening force.
Spring
Bulb
Suction
What 2 pressures are piped to an oil safety switch?
Crankcase pressure and oil pump pressure
Crankcase pressure and discharge pressure
Suction pressure and crankcase pressure
Oil pump pressure discharge pressure.
