FDNY Z51 RMO LATEST EXAM 2025 WITH
MULTIPLE CHOICE OF QUESTIONS AND
DETAILED SOLVED SOLUTIONS ALREADY
GRADED A+ AND 100% GUARANTEE PASS
(JUST RELEASED!!!!!!)
when an expansion valve is operating properly, at the end of the
evaporator will contain - CORRECT ANSWER-only superheated vapor
a centrifugal water pump is considered to be fully primed when
- CORRECT ANSWER-the pump is full of liquid
A refrigeration 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: - CORRECT ANSWER-temperature and pressure controls
Refrigerants are 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: - CORRECT ANSWER-ammonia
which of the following ashrae refrigerant safety classification is
the most toxic - CORRECT ANSWER-b3
,which of the following ashrae refrigerant safety classification is
the most flammable - CORRECT ANSWER-a3
in q indirect refrigeration system,of the following, the one that
would not be used as a cooling medium for building spaces
being cooled is - CORRECT ANSWER-r 22 (cooling medium= glycol or
any brine solution)
the primary way of achieving capacity control of a an
centrifugal compressor is by: - CORRECT ANSWER-adjustment to the
inlet impeller pre rotation vanes
regarding the functioning of a steam turbine, why is it advisable
to keep moisture in the inlet low as possible - CORRECT ANSWER-
keeps turbine blades wear to minimum
a water chiller is equipped with a reciprocating compressor, a
thermostatic expansion valve and a an air cooled condenser. A
restriction in the refrigerant line would result in - CORRECT
ANSWER-high suction super heat
the process by which refrigerant is extracted and cleaned for
reuse without requirements for reclamation is called - CORRECT
ANSWER-recycle
the purpose of wear rings in a centrifugal pump is to - CORRECT
ANSWER-prevent wearing of the pump housing and impeller
, a centrifugal compressor is in operation with suction pressure is
3 psig and the discharge is 10psi what is the atmospheric
pressure is 14.7 which is the ratio closest to - CORRECT ANSWER-1.39
electrical current us measured in - CORRECT ANSWER-amperage
how would you put an additional pump online - CORRECT ANSWER-
open suction valve, open discharge valve gradually
of the following, the major advantage of a shell and coil
condenser is - CORRECT ANSWER-there is less danger of developing
leaks
an engineer needs to vary the flow of refrigerant in a
refrigeration system, which operation in the flow of the system
does not include - CORRECT ANSWER-solenoid valve
thermal bull is attached to the suction plate between the
evaporator cokl and the compressor by an insulated line.
assume that the machine room is 85deg f . break down of the
insulation results in: - CORRECT ANSWER-flood the evaporator
water and moisture is serious problem in a refrigerant system
how to avoid - CORRECT ANSWER-proper evaluation at the charging
of the system
while on duty a refrigeration engineer notic That the suction
line to the compressor and part of the compressor itself is
frosted over the following the most likely reason for this
MULTIPLE CHOICE OF QUESTIONS AND
DETAILED SOLVED SOLUTIONS ALREADY
GRADED A+ AND 100% GUARANTEE PASS
(JUST RELEASED!!!!!!)
when an expansion valve is operating properly, at the end of the
evaporator will contain - CORRECT ANSWER-only superheated vapor
a centrifugal water pump is considered to be fully primed when
- CORRECT ANSWER-the pump is full of liquid
A refrigeration 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: - CORRECT ANSWER-temperature and pressure controls
Refrigerants are 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: - CORRECT ANSWER-ammonia
which of the following ashrae refrigerant safety classification is
the most toxic - CORRECT ANSWER-b3
,which of the following ashrae refrigerant safety classification is
the most flammable - CORRECT ANSWER-a3
in q indirect refrigeration system,of the following, the one that
would not be used as a cooling medium for building spaces
being cooled is - CORRECT ANSWER-r 22 (cooling medium= glycol or
any brine solution)
the primary way of achieving capacity control of a an
centrifugal compressor is by: - CORRECT ANSWER-adjustment to the
inlet impeller pre rotation vanes
regarding the functioning of a steam turbine, why is it advisable
to keep moisture in the inlet low as possible - CORRECT ANSWER-
keeps turbine blades wear to minimum
a water chiller is equipped with a reciprocating compressor, a
thermostatic expansion valve and a an air cooled condenser. A
restriction in the refrigerant line would result in - CORRECT
ANSWER-high suction super heat
the process by which refrigerant is extracted and cleaned for
reuse without requirements for reclamation is called - CORRECT
ANSWER-recycle
the purpose of wear rings in a centrifugal pump is to - CORRECT
ANSWER-prevent wearing of the pump housing and impeller
, a centrifugal compressor is in operation with suction pressure is
3 psig and the discharge is 10psi what is the atmospheric
pressure is 14.7 which is the ratio closest to - CORRECT ANSWER-1.39
electrical current us measured in - CORRECT ANSWER-amperage
how would you put an additional pump online - CORRECT ANSWER-
open suction valve, open discharge valve gradually
of the following, the major advantage of a shell and coil
condenser is - CORRECT ANSWER-there is less danger of developing
leaks
an engineer needs to vary the flow of refrigerant in a
refrigeration system, which operation in the flow of the system
does not include - CORRECT ANSWER-solenoid valve
thermal bull is attached to the suction plate between the
evaporator cokl and the compressor by an insulated line.
assume that the machine room is 85deg f . break down of the
insulation results in: - CORRECT ANSWER-flood the evaporator
water and moisture is serious problem in a refrigerant system
how to avoid - CORRECT ANSWER-proper evaluation at the charging
of the system
while on duty a refrigeration engineer notic That the suction
line to the compressor and part of the compressor itself is
frosted over the following the most likely reason for this
