NJ Blue Seal Refrigeration Test || A+ Score Secured.
On a single acting reciprocating compressor, what is the function of a dual control device?
correct answers It allows constant speed control and automatic start and stops
If a system were using an automatic expansion valve, what would the constant pressure be
maintained at? correct answers The evaporator
What is the main advantage of a cascade refrigeration system? correct answers Capable of
reaching very low temperature
Choose the statement below, which would prove false about lithium bromide used in absorption
system. correct answers It is non-corrosive
What is a sling psychrometer device used to measure? correct answers Relative humidity
A system using an evaporative condenser operates most efficiently under what conditions?
correct answers When the wet-bulb temperature of air is low
The discharge gas from the compressor is what, in a wet-compression refrigeration system?
correct answers Saturated
If a refrigeration system were over charged with refrigerant, what conditions would occur?
correct answers Decrease in capacity and increase in head pressure
If a cooling tower circulated 4,300 GPM of water, what is the cooling capacity in tons? correct
answers 1,433 tons
What condition would cause a system to not respond to an expansion valve adjustment? correct
answers Oil in the evaporator
,In an absorption system, the generator receives what medium? correct answers Strong liquor
Which would have the lease effect on the capacity of a water-cooled condenser? correct answers
The ambient air temperature
What is the volume occupied by a refrigerant under specified conditions of pressure and
temperature? correct answers Specific volume
What should a cooling tower water pH be maintained at? correct answers 8
The absolute Celsius scale is referred to by which temperature scale? correct answers Kelvin
Which devices control the high side float? correct answers Condenser and receiver
In Fahrenheit, what is the equivalent of -15 degrees Celsius? correct answers 5 degrees F
If you had a flooded evaporator, which type of metering device would you use? correct answers
Low side float
Choose the formula used to determine the number of cycles of concentration for a cooling tower?
correct answers Cycles = Tower water chlorides / Makeup water chlorides
What determines the low side pressure in a refrigeration system? correct answers The amount if
load on the system
Which seal is not used on a refrigeration system? correct answers Mechanical
, Which water chemistry test is used to determine cooling tower cycles of concentration? correct
answers Chlorides
Why is a rheostat used on a synchronous motor? correct answers To vary the power factor to the
load conditions
What would happen if you had a sudden drop in the temperature in the cooling tower of a lithium
bromide absorption system? correct answers Crystallization in the system
What is the function of a heat exchanger in an absorption system? correct answers Allows the
weak liquor to heat the strong liquor
Define the term "refrigerant reclaiming" correct answers Selling reprocessed refrigerant as
"reclaimed refrigerant" ; Reprocessing the refrigerant into a new product that can be reused ;
Chemically analyzing and distilling the refrigerant ; All of the above
Which phrase best describes the term "free air"? correct answers Air at atmospheric conditions
How is the setting on a thermostatic expansion valve rated? correct answers Degrees of superheat
Which statement describes the operation of a single acting compressor? correct answers The
refrigeration gas is compressed on only one side of the piston
Which of the following would cause a noisy compressor? correct answers Lack of oil ; Dry
damaged seal ; Loose drive coupling ; All of the above
When the evaporator load increases, what happens to the suction pressure of the system? correct
answers Flow remains constant with a corresponding pressure increase
On a single acting reciprocating compressor, what is the function of a dual control device?
correct answers It allows constant speed control and automatic start and stops
If a system were using an automatic expansion valve, what would the constant pressure be
maintained at? correct answers The evaporator
What is the main advantage of a cascade refrigeration system? correct answers Capable of
reaching very low temperature
Choose the statement below, which would prove false about lithium bromide used in absorption
system. correct answers It is non-corrosive
What is a sling psychrometer device used to measure? correct answers Relative humidity
A system using an evaporative condenser operates most efficiently under what conditions?
correct answers When the wet-bulb temperature of air is low
The discharge gas from the compressor is what, in a wet-compression refrigeration system?
correct answers Saturated
If a refrigeration system were over charged with refrigerant, what conditions would occur?
correct answers Decrease in capacity and increase in head pressure
If a cooling tower circulated 4,300 GPM of water, what is the cooling capacity in tons? correct
answers 1,433 tons
What condition would cause a system to not respond to an expansion valve adjustment? correct
answers Oil in the evaporator
,In an absorption system, the generator receives what medium? correct answers Strong liquor
Which would have the lease effect on the capacity of a water-cooled condenser? correct answers
The ambient air temperature
What is the volume occupied by a refrigerant under specified conditions of pressure and
temperature? correct answers Specific volume
What should a cooling tower water pH be maintained at? correct answers 8
The absolute Celsius scale is referred to by which temperature scale? correct answers Kelvin
Which devices control the high side float? correct answers Condenser and receiver
In Fahrenheit, what is the equivalent of -15 degrees Celsius? correct answers 5 degrees F
If you had a flooded evaporator, which type of metering device would you use? correct answers
Low side float
Choose the formula used to determine the number of cycles of concentration for a cooling tower?
correct answers Cycles = Tower water chlorides / Makeup water chlorides
What determines the low side pressure in a refrigeration system? correct answers The amount if
load on the system
Which seal is not used on a refrigeration system? correct answers Mechanical
, Which water chemistry test is used to determine cooling tower cycles of concentration? correct
answers Chlorides
Why is a rheostat used on a synchronous motor? correct answers To vary the power factor to the
load conditions
What would happen if you had a sudden drop in the temperature in the cooling tower of a lithium
bromide absorption system? correct answers Crystallization in the system
What is the function of a heat exchanger in an absorption system? correct answers Allows the
weak liquor to heat the strong liquor
Define the term "refrigerant reclaiming" correct answers Selling reprocessed refrigerant as
"reclaimed refrigerant" ; Reprocessing the refrigerant into a new product that can be reused ;
Chemically analyzing and distilling the refrigerant ; All of the above
Which phrase best describes the term "free air"? correct answers Air at atmospheric conditions
How is the setting on a thermostatic expansion valve rated? correct answers Degrees of superheat
Which statement describes the operation of a single acting compressor? correct answers The
refrigeration gas is compressed on only one side of the piston
Which of the following would cause a noisy compressor? correct answers Lack of oil ; Dry
damaged seal ; Loose drive coupling ; All of the above
When the evaporator load increases, what happens to the suction pressure of the system? correct
answers Flow remains constant with a corresponding pressure increase
