6/12/25, 9:59 AM fdny z51 rmo 2025 COMPREHENSIVE EXAM QUESTIONS |RECENTLY TESTING REAL EXAM QUESTIONS|VERIFIED SOLUTI…
fdny z51 rmo 2025 COMPREHENSIVE EXAM
QUESTIONS |RECENTLY TESTING REAL EXAM
QUESTIONS|VERIFIED SOLUTIONS (100%
CORRECT)
Save
Terms in this set (119)
the efficiency of the lowering the condenser pressure
refrigerant cycle is
affected by the operation
of the condenser. Of the
following, a more efficient
centrifugal compressor
operation results from
In most semi hermetic cools the motor
compressors, the suction
vapor is used for
The amount of refrigerant difference between the high side and the low side
that flows through the pressure
orifices of an economizer
is determined by the
the instalation of an inline to remove impurities from the system
refrigerant cleaning
system is advisable
https://quizlet.com/1053677043/fdny-z51-rmo-2025-comprehensive-exam-questions-recently-testing-real-exam-questionsverified-solutions-100-corre… 1/16
,6/12/25, 9:59 AM fdny z51 rmo 2025 COMPREHENSIVE EXAM QUESTIONS |RECENTLY TESTING REAL EXAM QUESTIONS|VERIFIED SOLUTI…
a refrigerant engineer a faulty cooling tower water level controller
verifies that a condenser
pump is cavitation of the
following the most likely
cause for this condition is:
when an expansion valve only superheated vapor
is operating properly, at
the end of the evaporator
will contain
a centrifugal water pump the pump is full of liquid
is considered to be fully
primed when
A refrigeration temperature and pressure controls
compressor has failed to
turn on. the engineer on
duty verifies the electrical
circuit to the motor,
including all switches and
circuit breakers is
complete, according to
recomended service
practice, the next item to
be checked would likely
be the:
Refrigerants are ammonia
characterized by their
physical properties
including Flashpoint,
refrigeration effect and
others, of the refrigerants
in commercial and
industrial the highest
latent heat and refrigerant
effect is:
https://quizlet.com/1053677043/fdny-z51-rmo-2025-comprehensive-exam-questions-recently-testing-real-exam-questionsverified-solutions-100-corre… 2/16
, 6/12/25, 9:59 AM fdny z51 rmo 2025 COMPREHENSIVE EXAM QUESTIONS |RECENTLY TESTING REAL EXAM QUESTIONS|VERIFIED SOLUTI…
which of the following b3
ashrae refrigerant safety
classification is the most
toxic
which of the following a3
ashrae refrigerant safety
classification is the most
flammable
in q indirect refrigeration r 22 (cooling medium= glycol or any brine solution)
system,of the following,
the one that would not be
used as a cooling medium
for building spaces being
cooled is
the primary way of adjustment to the inlet impeller pre rotation vanes
achieving capacity control
of a an centrifugal
compressor is by:
regarding the functioning keeps turbine blades wear to minimum
of a steam turbine, why is
it advisable to keep
moisture in the inlet low as
possible
a water chiller is equipped high suction super heat
with a reciprocating
compressor, a
thermostatic expansion
valve and a an air cooled
condenser. A restriction in
the refrigerant line would
result in
https://quizlet.com/1053677043/fdny-z51-rmo-2025-comprehensive-exam-questions-recently-testing-real-exam-questionsverified-solutions-100-corre… 3/16
fdny z51 rmo 2025 COMPREHENSIVE EXAM
QUESTIONS |RECENTLY TESTING REAL EXAM
QUESTIONS|VERIFIED SOLUTIONS (100%
CORRECT)
Save
Terms in this set (119)
the efficiency of the lowering the condenser pressure
refrigerant cycle is
affected by the operation
of the condenser. Of the
following, a more efficient
centrifugal compressor
operation results from
In most semi hermetic cools the motor
compressors, the suction
vapor is used for
The amount of refrigerant difference between the high side and the low side
that flows through the pressure
orifices of an economizer
is determined by the
the instalation of an inline to remove impurities from the system
refrigerant cleaning
system is advisable
https://quizlet.com/1053677043/fdny-z51-rmo-2025-comprehensive-exam-questions-recently-testing-real-exam-questionsverified-solutions-100-corre… 1/16
,6/12/25, 9:59 AM fdny z51 rmo 2025 COMPREHENSIVE EXAM QUESTIONS |RECENTLY TESTING REAL EXAM QUESTIONS|VERIFIED SOLUTI…
a refrigerant engineer a faulty cooling tower water level controller
verifies that a condenser
pump is cavitation of the
following the most likely
cause for this condition is:
when an expansion valve only superheated vapor
is operating properly, at
the end of the evaporator
will contain
a centrifugal water pump the pump is full of liquid
is considered to be fully
primed when
A refrigeration temperature and pressure controls
compressor has failed to
turn on. the engineer on
duty verifies the electrical
circuit to the motor,
including all switches and
circuit breakers is
complete, according to
recomended service
practice, the next item to
be checked would likely
be the:
Refrigerants are ammonia
characterized by their
physical properties
including Flashpoint,
refrigeration effect and
others, of the refrigerants
in commercial and
industrial the highest
latent heat and refrigerant
effect is:
https://quizlet.com/1053677043/fdny-z51-rmo-2025-comprehensive-exam-questions-recently-testing-real-exam-questionsverified-solutions-100-corre… 2/16
, 6/12/25, 9:59 AM fdny z51 rmo 2025 COMPREHENSIVE EXAM QUESTIONS |RECENTLY TESTING REAL EXAM QUESTIONS|VERIFIED SOLUTI…
which of the following b3
ashrae refrigerant safety
classification is the most
toxic
which of the following a3
ashrae refrigerant safety
classification is the most
flammable
in q indirect refrigeration r 22 (cooling medium= glycol or any brine solution)
system,of the following,
the one that would not be
used as a cooling medium
for building spaces being
cooled is
the primary way of adjustment to the inlet impeller pre rotation vanes
achieving capacity control
of a an centrifugal
compressor is by:
regarding the functioning keeps turbine blades wear to minimum
of a steam turbine, why is
it advisable to keep
moisture in the inlet low as
possible
a water chiller is equipped high suction super heat
with a reciprocating
compressor, a
thermostatic expansion
valve and a an air cooled
condenser. A restriction in
the refrigerant line would
result in
https://quizlet.com/1053677043/fdny-z51-rmo-2025-comprehensive-exam-questions-recently-testing-real-exam-questionsverified-solutions-100-corre… 3/16
