1|Page
Refrigeration Operating Engineer License Exam
Practice Test ||Verified Exam!!|| Most Recent Exam
Actual Complete Real Exam Questions And Correct
Answers (Verified Answers) Already Graded A+ ||
Newest Exam!!!
the type of refrigerant system that is least likely to leak
refrigerant into the building space that are being cooled: -
Answer-the indirect system
the suction pressure of a reciprocating compressor is 65
PSIG. The discharge pressure of this compressor is 120
PSIG. The atmospheric is 14.7 PSI. the compression ratio
for the given condition is closest to: - Answer-1.69
a superheated vapor is: - Answer-dry vapor above the
saturation temperature
a refrigerant engineer veritifies that a condenser water
pump is cavitating. Of the following, the most likely cause
for this condition is: - Answer-a faulty cooling tower water
level controller
,2|Page
a centrifugal water pump is known as a lift pump when the:
- Answer-the water supply to the pump suction inlet is
below the pump level
a TXV is used to maintain constant: - Answer-evaporator
superheat
the chilled water supply to the building is 55F. If the chiller
is being used for human comfort, should you be
concerned about this, and why? - Answer-Yes, this temp is
too high for human comfort purpose
the packing gland of a centrifugal pump serves to: -
Answer-the drip part of the packing gland gives evidence
that there is water in the pump
capacity control of reciprocating hermetic compressor is
typically achieved through - Answer-operation of the hot
gas bypass valve
the most important reason to sub-cool the refrigerant in
the condenser is to ensure that: - Answer-a pure liquid
refrigerant will enter the metering device
,3|Page
A refrigeration engineer is logging readings from a
reciprocating system. Compressor discharge temperature
have dropped significantly and the suction line pressure is
high. Which of the following that may be causing this set of
condition? - Answer-an expansion valve that is open to
wide
a low side float valve is used to maintain: - Answer-the
level of the refrigerant in the evaporator
regarding fire safety, which ASHRAE refrigerant safety
classification indicates no flammability and lower toxicity? -
Answer-A1
when an expansion valve is operating properly, at the end
of the evaporator will contain: - Answer-only superheated
vapor
what information is not contained in a Material Safety Data
Sheet-MSDS? - Answer-cost of the material
, 4|Page
in a steam turbine, what is the function of the Kingsbury
thrust bearing? - Answer-maintain axial positioning of the
rotor shaft
a centrifugal water pump is considered to the fully primed
when - Answer-the pump is full of liquid
efficiency of the refrigerant cycle is affected by the
operations of the condenser. Of the following, a more
efficient centrifugal compressor operation results from: -
Answer-Lowering the condensing pressure
The heat removed from the refrigerant in a condenser is: -
Answer-sensible and latent heat
The refrigerant unit that you have been assigned to is
being taken out of service for a major repair. You have
been assigned to withdraw refrigerant for storage in
suitable containers. According to the NYC fire code, you
must ensure that the containers: - Answer-Are approved
by the US Dept. of Transportation
which of the following best describes how the cylinder
unloader work? - Answer-keep in the suction valve opened
while the compressor is in the return stroke
Refrigeration Operating Engineer License Exam
Practice Test ||Verified Exam!!|| Most Recent Exam
Actual Complete Real Exam Questions And Correct
Answers (Verified Answers) Already Graded A+ ||
Newest Exam!!!
the type of refrigerant system that is least likely to leak
refrigerant into the building space that are being cooled: -
Answer-the indirect system
the suction pressure of a reciprocating compressor is 65
PSIG. The discharge pressure of this compressor is 120
PSIG. The atmospheric is 14.7 PSI. the compression ratio
for the given condition is closest to: - Answer-1.69
a superheated vapor is: - Answer-dry vapor above the
saturation temperature
a refrigerant engineer veritifies that a condenser water
pump is cavitating. Of the following, the most likely cause
for this condition is: - Answer-a faulty cooling tower water
level controller
,2|Page
a centrifugal water pump is known as a lift pump when the:
- Answer-the water supply to the pump suction inlet is
below the pump level
a TXV is used to maintain constant: - Answer-evaporator
superheat
the chilled water supply to the building is 55F. If the chiller
is being used for human comfort, should you be
concerned about this, and why? - Answer-Yes, this temp is
too high for human comfort purpose
the packing gland of a centrifugal pump serves to: -
Answer-the drip part of the packing gland gives evidence
that there is water in the pump
capacity control of reciprocating hermetic compressor is
typically achieved through - Answer-operation of the hot
gas bypass valve
the most important reason to sub-cool the refrigerant in
the condenser is to ensure that: - Answer-a pure liquid
refrigerant will enter the metering device
,3|Page
A refrigeration engineer is logging readings from a
reciprocating system. Compressor discharge temperature
have dropped significantly and the suction line pressure is
high. Which of the following that may be causing this set of
condition? - Answer-an expansion valve that is open to
wide
a low side float valve is used to maintain: - Answer-the
level of the refrigerant in the evaporator
regarding fire safety, which ASHRAE refrigerant safety
classification indicates no flammability and lower toxicity? -
Answer-A1
when an expansion valve is operating properly, at the end
of the evaporator will contain: - Answer-only superheated
vapor
what information is not contained in a Material Safety Data
Sheet-MSDS? - Answer-cost of the material
, 4|Page
in a steam turbine, what is the function of the Kingsbury
thrust bearing? - Answer-maintain axial positioning of the
rotor shaft
a centrifugal water pump is considered to the fully primed
when - Answer-the pump is full of liquid
efficiency of the refrigerant cycle is affected by the
operations of the condenser. Of the following, a more
efficient centrifugal compressor operation results from: -
Answer-Lowering the condensing pressure
The heat removed from the refrigerant in a condenser is: -
Answer-sensible and latent heat
The refrigerant unit that you have been assigned to is
being taken out of service for a major repair. You have
been assigned to withdraw refrigerant for storage in
suitable containers. According to the NYC fire code, you
must ensure that the containers: - Answer-Are approved
by the US Dept. of Transportation
which of the following best describes how the cylinder
unloader work? - Answer-keep in the suction valve opened
while the compressor is in the return stroke
