HVAC-R Assessment (OLD- DO NOT USE))
Authored by Nicole Fisher
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Professional Development
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1.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
What is the definition of subcooling?
Temperature of vapor above boiling temperature of its liquid at that pressure.
Heat characterized by a change of state of the substance.
The temperature at which moisture begins to condense out of the air.
Cooling of liquid refrigerant below its condensing temperature.
I'm not sure
2.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Define Superheat:
Temperature of vapor above boiling temperature of its liquid at that pressure.
Heat characterized by a change of state of the substance.
The temperature at which moisture begins to condense out of the air.
Cooling of liquid refrigerant below its condensing temperature.
I'm not sure
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Which of the following components is not used in the secondary side of a glycol system?
Balance valve
Pump
Expansion tank
Condenser
I'm not sure
4.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
A liquid line filter drier is installed in the low side of the system.
True
False
I'm not sure
5.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
A valuable tool that service technicians use to quickly look up the pressure and corresponding temperature of refrigerant.
Psychrometric Chart
Enthalpy Chart
Pressure Temperature Chart
Power Factor Chart
I'm not sure
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Define Saturated Suction Temperature (SST):
Temperature at which the refrigerant changes from a vapor state to a liquid
Temperature at which the refrigerant changes from a liquid state to a vapor
Temperature at which the refrigerant changes from a liquid state to a solid
Temperature at which the refrigerant changes from a solid state to a vapor
I'm not sure
7.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
What component in a refrigeration system do you adjust to set the superheat?
Compressor
Condenser
Evaporator
Thermostatic Expansion Valve
I'm not sure
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