Refrigeration Accessories

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Congratulations - you have completed Refrigeration Accessories.

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Question 1

The component that is located on the discharge line and helps to minimize gas pulsations is called the?

A	Accumulator
B	Receiver
C	Heat exchanger
D	Hot gas muffler

Question 2

The_______________ is installed in the liquid line and is responsible for removing moisture and foreign matter.

A	Receiver
B	Sight glass
C	Solenoid
D	Filter drier

Question 3

The device that allows the technician to view refrigerant flow is the?

A	Sight glass
B	Drier
C	Solenoid
D	Receiver

Question 4

Bubbles in the sight glass may indicate

A	Overcharged system
B	Refrigerant shortage
C	Restriction
D	Both b and c

Question 5

It is good practice to install an ___________after a new compressor has been replaced, especially after a burnout.

A	Accumulator
B	Low-pressure control
C	Suction-line drier
D	Heat exchanger

Question 6

Pressure valves, which are installed on systems should be calibrated from 0 psi to no less than _______above the normal operating suction and discharge pressures.

A	20-40 psi
B	40-60 psi
C	50-100 psi
D	100-120 psi

Question 7

When pressure gauges are installed on refrigeration systems, they should be connected with

A	Solenoid valves
B	Vibration absorbers
C	Throttling valves
D	Mufflers

Question 8

The type of valves that can divert the flow of refrigerant during service procedures are called?

A	Manual shutoff valves
B	Solenoid valves
C	Check valves
D	King valves

Question 9

The type of valve that would use a packing gland to help ensure against leakage is called the?

A	Manual shutoff valves
B	Solenoid valves
C	Check valves
D	King valves

Question 10

The type of valve that is located on the liquid line close to the condenser outlet is called the?

A	Solenoid valve
B	King valve
C	Queen valve
D	Charging valve

Question 11

The king valve is located?

A	On the liquid receiver’s inlet side
B	On the liquid receiver’s outlet side
C	Near the solenoid valve
D	Near the check valve

Question 12

The component that functions as a storage tank for the system’s refrigerant is called the?

A	Accumulator
B	Heat exchanger
C	Receiver
D	Separator

Question 13

The liquid receiver should be designed to hold liquid refrigerant, along with approximately ______% room for the expansion of vapors.

A	8-10
B	10-12
C	15-20
D	20-30

Question 14

The type of valves that are considered to be safety valves are?

A	Solenoid valves
B	Receiver valves
C	Relief valves
D	Service valves

Question 15

The type of safety valves that will reseat itself once safe operating pressures are restored is called a?

A	Solenoid valve
B	King valve
C	Queen valve
D	Pressure-relief valve

Question 16

The type of safety valve that contains a predetermined melting alloy is called the?

A	Spring-loaded valve
B	EPR valve
C	CPR valve
D	Fusible plug

Question 17

When a fusible plug opens, the system’s refrigerant will be

A	Partially lost
B	One half lost
C	Around three fourths lost
D	Entirely lost

Question 18

The check valves is designed to

A	Allow the flow of refrigerant in one direction only
B	Allow the flow of refrigerant in two directions
C	Lock refrigerant in the suction line
D	Limit the amount of superheat

Question 19

Check valves are installed on multiple evaporator systems and are located on the?

A	Discharge line
B	Liquid line
C	Suction line of the warmest evaporator
D	Suction line of the coldest evaporator

Question 20

The valve that is located on the liquid line and is used to stop refrigerant flow to the evaporator is called the?

A	CPR valve
B	EPR valve
C	Check valve
D	Solenoid valve

Question 21

The valve that is controlled by a thermostat and can be used as part of a pump-down system is called the?

A	CPR valve
B	EPR valve
C	Check valve
D	Solenoid valve

Question 22

A ________ is a device that is used to subcool liquid refrigerant.

A	Accumulator
B	Heat exchanger
C	Receiver
D	Check valve

Question 23

The component that is installed on the suction line and helps to decrease flash gas is?

A	Accumulator
B	Heat exchanger
C	Receiver
D	Check valve

Question 24

The component that is installed on the suction line and is used to prevent liquid floodback to the compressor is called the?

A	Accumulator
B	Heat exchanger
C	Receiver
D	Check valve

Question 25

The refrigerant distributor is connected to a thermostatic expansion valve, and its purpose is to?

A	Flood the evaporator
B	Limit the refrigerant flow to the evaporator
C	Provide for proper refrigerant velocity to the evaporator
D	Provide little superheat

Question 26

The component that is located on the discharge line close to the compressor is called the?

A	Solenoid valve
B	Accumulator
C	Oil separator
D	Heat exchanger

Question 27

The component that helps to prevent the migration of oil and liquid refrigerant is called the?

A	Heat exchanger
B	Oil separator
C	Crankcase heater
D	Accumulator

Question 28

The valve that is installed on the suction line close to the evaporator and sometimes referred to as a “back pressure valve” is called the?

A	Check valve
B	Solenoid valve
C	Evaporator pressure regulator
D	CPR valve

Question 29

The condenser pressure regulator is located?

A	Before the condenser
B	After the condenser
C	In series with the oil separator
D	As close to the compressor as possible

Question 30

The condenser pressure regulator is used to?

A	Maintain adequate head pressure
B	Control suction superheat
C	Maintain low subcooling
D	Act as a hot gas bypass

Question 31

The oil failure safety control contains___________bellows.

A	One
B	Two
C	Three
D	Four

Question 32

The function of the oil failure control is to?

A	Allow four more minutes of compressor run time
B	Allow five more minutes of compressor run time
C	Cycle the compressor off when oil pressure fails
D	Cycle compressor on/off until a diagnosis is made

Question 33

The high-pressure control is a device that is responsive to high and unsafe head pressure; it is wired?

A	In series with a solenoid valve
B	In series with a compressor starter/contactor coil
C	In series with the condenser fan motor
D	In series with the crankcase heater

Question 34

The low-pressure control will stop the compressor when?

A	Suction pressure is stabilized
B	Suction pressure is 3 psi below the cut-in setting
C	Suction pressure falls too low
D	Enough superheat is established

Question 35

The high-pressure control protects against unsafe pressures. The contacts are?

A	Open on rise
B	Close on rise
C	Low pressure is normally open
D	High pressure is normally open

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Tek Assist - NATE Core and Specialties Tests

Refrigeration Accessories

Refrigeration Accessories

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