HVAC 2342 #3 Questions and
Answers 100% Correct
The state of refrigerant is different in each component of the refrigerant system.
What is the state of the refrigerant in the metering device? - ANSWER - liquid
A technician is troubleshooting a commercial refrigeration system and observes
bubbles in the sight glass. This indicates that: - ANSWER - the system is
undercharged
The compressor is designed as a vapor pump. When is it permissible to have liquid
in the compressor? - ANSWER - never
During the refrigeration cycle, the refrigerant becomes superheated in: - ANSWER -
all of the above
During the refrigeration cycle, a change of pressure occurs in the: - ANSWER -
metering device
Which of the following is an indication that the evaporator is in a starved condition?
- ANSWER - high superheat
The function of the Evaporator Pressure Regulator (EPR) is: - ANSWER - maintain the
desired temperature in the refrigerated space
A technician is troubleshooting a commercial refrigeration system. The system has
higher than normal head pressure and higher thqan normal compressor current. The
most probable cause for this is: - ANSWER - Dirty or clogged condenser coil
The King valve is located between the _____ and the ________. - ANSWER - Liquid
receiver/liquid line
, Which type of evaporator is classified as a non-frosting evaporator? - ANSWER -
operating temperatures which do not go much below 32ºF
When a filter drier is saturated it will: - ANSWER - Not absorb any additional
moisture
When qaq technician is evacuating a system, he or she is: - ANSWER - removing any
mositure
The technician notices that the temperature on the outlet end of the liquid line drier
is cooler than the temperature on the input end. This indicates that: - ANSWER - the
drier is clogged or restricted
Where would the accumulator in a commercial refrigeration system be located? -
ANSWER - in the suction line
When would the solenoid, used to achieve a pump down cycle in a commercial
refrigeration system, be loacted? - ANSWER - in the liquid line
Which control can be used both as a safety and motor cycling control on commercial
refrigeration systems? - ANSWER - low pressure control
Which control on a commercial system is used as a motor cycling control only? -
ANSWER - temperature control
A technician is using a special machine to remove the refrigerant from a commercial
refrigeration system. This process is called: - ANSWER - recovery
In a commercial refrigeration system using a low pressure control as a motor cycling
control, the refrigerant evaporating temperature will be _____ºF lower than the box
temperature of the refrigerated space. - ANSWER - 15
Answers 100% Correct
The state of refrigerant is different in each component of the refrigerant system.
What is the state of the refrigerant in the metering device? - ANSWER - liquid
A technician is troubleshooting a commercial refrigeration system and observes
bubbles in the sight glass. This indicates that: - ANSWER - the system is
undercharged
The compressor is designed as a vapor pump. When is it permissible to have liquid
in the compressor? - ANSWER - never
During the refrigeration cycle, the refrigerant becomes superheated in: - ANSWER -
all of the above
During the refrigeration cycle, a change of pressure occurs in the: - ANSWER -
metering device
Which of the following is an indication that the evaporator is in a starved condition?
- ANSWER - high superheat
The function of the Evaporator Pressure Regulator (EPR) is: - ANSWER - maintain the
desired temperature in the refrigerated space
A technician is troubleshooting a commercial refrigeration system. The system has
higher than normal head pressure and higher thqan normal compressor current. The
most probable cause for this is: - ANSWER - Dirty or clogged condenser coil
The King valve is located between the _____ and the ________. - ANSWER - Liquid
receiver/liquid line
, Which type of evaporator is classified as a non-frosting evaporator? - ANSWER -
operating temperatures which do not go much below 32ºF
When a filter drier is saturated it will: - ANSWER - Not absorb any additional
moisture
When qaq technician is evacuating a system, he or she is: - ANSWER - removing any
mositure
The technician notices that the temperature on the outlet end of the liquid line drier
is cooler than the temperature on the input end. This indicates that: - ANSWER - the
drier is clogged or restricted
Where would the accumulator in a commercial refrigeration system be located? -
ANSWER - in the suction line
When would the solenoid, used to achieve a pump down cycle in a commercial
refrigeration system, be loacted? - ANSWER - in the liquid line
Which control can be used both as a safety and motor cycling control on commercial
refrigeration systems? - ANSWER - low pressure control
Which control on a commercial system is used as a motor cycling control only? -
ANSWER - temperature control
A technician is using a special machine to remove the refrigerant from a commercial
refrigeration system. This process is called: - ANSWER - recovery
In a commercial refrigeration system using a low pressure control as a motor cycling
control, the refrigerant evaporating temperature will be _____ºF lower than the box
temperature of the refrigerated space. - ANSWER - 15
