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FDNY Z-51 Exam Newest Complete All Questions And
Correct Detailed Answers (Verified Answers) |Already
Graded A+||Newest Exam Version!!!!
the efficiency of the refrigerant cycle is affected by the
operation of the condenser. Of the following, a more
efficient centrifugal compressor operation results from -
Answer-lowering the condenser pressure
In most semi hermetic compressors, the suction vapor is
used for - Answer-cools the motor
The amount of refrigerant that flows through the orifices of
an economizer is determined by the - Answer-difference
between the high side and the low side pressure
the instalation of an inline refrigerant cleaning system is
advisable - Answer-to remove impurities from the system
a refrigerant engineer verifies that a condenser pump is
cavitation of the following the most likely cause for this
condition is: - Answer-a faulty cooling tower water level
controller
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when an expansion valve is operating properly, at the end
of the evaporator will contain - Answer-only superheated
vapor
a centrifugal water pump is considered to be fully primed
when - 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: - 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: - Answer-ammonia
which of the following ashrae refrigerant safety
classification is the most toxic - Answer-b3
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which of the following ashrae refrigerant safety
classification is the most flammable - 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 - Answer-r 22 (cooling medium=
glycol or any brine solution)
the primary way of achieving capacity control of a an
centrifugal compressor is by: - 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 -
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 - Answer-high suction super heat
FDNY Z-51 Exam Newest Complete All Questions And
Correct Detailed Answers (Verified Answers) |Already
Graded A+||Newest Exam Version!!!!
the efficiency of the refrigerant cycle is affected by the
operation of the condenser. Of the following, a more
efficient centrifugal compressor operation results from -
Answer-lowering the condenser pressure
In most semi hermetic compressors, the suction vapor is
used for - Answer-cools the motor
The amount of refrigerant that flows through the orifices of
an economizer is determined by the - Answer-difference
between the high side and the low side pressure
the instalation of an inline refrigerant cleaning system is
advisable - Answer-to remove impurities from the system
a refrigerant engineer verifies that a condenser pump is
cavitation of the following the most likely cause for this
condition is: - Answer-a faulty cooling tower water level
controller
,2|Page
when an expansion valve is operating properly, at the end
of the evaporator will contain - Answer-only superheated
vapor
a centrifugal water pump is considered to be fully primed
when - 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: - 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: - Answer-ammonia
which of the following ashrae refrigerant safety
classification is the most toxic - Answer-b3
, 3|Page
which of the following ashrae refrigerant safety
classification is the most flammable - 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 - Answer-r 22 (cooling medium=
glycol or any brine solution)
the primary way of achieving capacity control of a an
centrifugal compressor is by: - 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 -
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 - Answer-high suction super heat
