WorksheetsRefrigeration System Quiz
Total questions: 48
Worksheet time: 27mins
Refrigerants evaporate to release heat outside of the refrigerated space.
True
False
The evaporation of a fluid is an indication that (a) is being absorbed.
Volume is decreased inside the compressor, causing an increase in pressure and _____.
condensation
evaporation
molecules
temperature
The state of refrigerant that is capable of absorbing the most heat is _____.
high-pressure liquid
high-pressure vapor
low-pressure liquid
low-pressure vapor
The high side of the refrigeration system is where heat is absorbed and removed from the refrigerated space.
True
False
The high side of a refrigeration system is divided from the low side by the _____.
liquid receiver
condenser
evaporator
metering device
Low-side pressure may also be called ____ pressure.
condenser
discharge
head
suction
The reciprocating movement of a compressor piston ____.
provides suction
compresses the refrigerant
Both A and B
Neither A nor B
Operational balance is reached when the number of vapor molecules that condense into liquid in the condenser equals the number of ____.
liquid refrigerant molecules in the liquid receiver
lubricant molecules returned to the crankcase
liquid molecules needed to fill the evaporator
vapor refrigerant molecules pumped by the compressor
An oil separator uses ____, or screens, to separate oil from refrigerant vapors.
baffles
magnets
pumps
vacuums
A condenser’s primary function in a system is to remove ____ heat from refrigerant.
ambient
compressor
latent
sensible
Which type of water-cooled condenser consists of only two tubes with water flowing in one direction in one tube and refrigerant flowing in the opposite direction in the other tube?
Forced-water
Shell-and-coil
Shell-and-tube
Tube-within-a-tube
The quantity of refrigerant in a system is less critical when the system has a(n) _____.
A. liquid line solenoid valve
B. liquid receiver
C. oversized compressor
D. refrigerant leak
The _____ line connects the liquid receiver to the metering device.
A. condensate
B. discharge
C. liquid
D. suction
A liquid line filter-drier can also be called a low-side filter-drier.
True
False
A metering device is intended to provide _____ in liquid refrigerant's passage into the evaporator.
A. filtration
B. a restriction
C. superheat
D. All of the above
The drop in pressure between the metering device and the evaporator _____ the boiling point of the refrigerant.
A. does not change
B. doubles
C. lowers
D. quadruples
To create a cooling effect, an evaporator primarily absorbs _____ heat.
A. adiabatic
B. latent
C. liquid
D. sensible
The term superheated means that the refrigerant is a liquid with a temperature below the boiling point.
True
False
The purpose of a suction line filter-drier is to increase the pressure difference between the evaporator and the compressor.
True
False
Match the letter corresponding to the name of the refrigeration system component to its description below. Not all letters will be used. The liquid refrigerant entering this component is under low pressure, which makes the liquid vaporize and absorb heat.
B. Compressor
E. Liquid line
D. Evaporator
A. Accumulator
C. Condenser
A device that removes oil from hot, compressed vapor.
I. Oil separator
A. Accumulator
B. Compressor
C. Condenser
D. Evaporator
The line carrying refrigerant from the evaporator to the compressor.
J. Suction line
A. Accumulator
B. Compressor
C. Condenser
D. Evaporator
In this component, heat is removed from the refrigerant vapor.
B. Compressor
A. Accumulator
C. Condenser
E. Liquid line
D. Evaporator
This component carries refrigerant from the condenser to the evaporator.
A. Accumulator
C. Condenser
B. Compressor
E. Liquid line
D. Evaporator
A safety device to prevent liquid refrigerant from entering the suction line and compressor.
E. Liquid line
A. Accumulator
D. Evaporator
B. Compressor
C. Condenser
This component prevents moisture, dirt, and metal chips from entering the metering device.
C. Condenser
B. Compressor
A. Accumulator
D. Evaporator
F. Liquid line filter-drier
This component controls liquid refrigerant flow into the evaporator.
D. Evaporator
C. Condenser
B. Compressor
A. Accumulator
H. Metering device
A ______ refrigerant is like a dry sponge that has the ability to soak up a lot of water.
Low-pressure liquid
Low-pressure vapor
High-pressure liquid
High-pressure vapor
From the metering device through the evaporator to the compressor is the ______ side of the system.
low
high
condensing
heat-rejecting
From the compressor exhaust through the condenser and liquid line to the metering device is the ______ side of the system.
low
high
evaporative
suction
Using suction, a compressor draws in refrigerant by creating ______ in the evaporator.
low pressure
high pressure
low temperatures
high temperatures
Using the process of compression, a compressor increases refrigerant ______.
pressure and volume
temperature and volume
volume and heat content
pressure and heat content
Commonly used in different HVACR applications, ______ compressors use a back-and-forth or up-and-down motion.
rotary
scrolling
reciprocating
centrifugal
A heat-exchanging device designed to expel or reject heat is a(n) ______.
accumulator
evaporator
liquid receiver
condenser
A condenser that uses a fan to remove heat more quickly is called a ______ condenser.
static
forced-air
natural-convection
water-cooled
Heat flow can best be described as
flowing from hot areas to cold areas
flowing from cold areas to hot areas
remaining stationary unless forced to move
remaining stationary regardless of forces around it
A storage tank for liquid refrigerant on the high side of the system is a(n)
accumulator
condenser
evaporator
liquid receiver
A refrigeration system with a(n) ______ metering device does not use a liquid receiver.
capillary tube
low-side float
automatic expansion valve
thermostatic expansion valve
Into which tank can a technician pump a refrigeration system's entire refrigerant charge to perform service?
Accumulator
Evaporator
Condenser
Liquid receiver
The high-pressure line between condenser and metering device is called the ______ line.
condensing
suction
liquid
discharge
To protect a system from dirt, moisture, metal, and other debris, install a(n)
accumulator
filter-drier
metering device
oil separator
A heat-exchanging device designed to absorb heat is a(n)
accumulator
evaporator
liquid receiver
condenser
The instantaneous evaporation of liquid refrigerant in an evaporator is called
absorbent
subcooled liquid
superheated vapor
flash gas
A storage tank that traps liquid refrigerant on the low side of the system is a(n)
accumulator
condenser
evaporator
liquid receiver
An accumulator will function best with its inlet positioned ______ the tank.
at the top of
at the bottom of
in the middle of
anywhere on
The low-pressure line is sometimes called the ______ line.
condensing
suction
liquid
discharge
Draw the refrigeration cycle and indicate the flow of refrigerant in cool mode

