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FDNY Z51 FINAL EXAM 2024 MOST RECENT VERSIONS COMPREHENSIVE QUESTIONS WITH DETAILED VERIFIED ANSWERS (100% CORRECT ANSWERS) GET IT RIGHT |GRADED A+$14.99
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8/28/24, 5:14 PM FDNY Z51 FINAL EXAM 2024 MOST RECENT VERSIONS COMPREHENSIVE QUESTIONS WITH DETAILED VERIFIED AN…
FDNY Z51 FINAL EXAM 2024 MOST RECENT
VERSIONS COMPREHENSIVE QUESTIONS
WITH DETAILED VERIFIED ANSWERS (100%
CORRECT ANSWERS) GET IT RIGHT |GRADED
A+
Terms in this set (222)
The efficiency of the Lowering the condensing pressure
refrigerant cycle is
affected by the operation
of the condenser. of the
following. a more efficient
centrifugal compressor
operation results from:
The heat removed from Sensible and latent heat
the refrigerant in a
condenser is:
The refrigerant unit that Are approved by the US department of transportation
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 new York city fire code,
you must ensure that the
containers:
Which of the following Keep in the suction valve opened while the
best describes how the compressor is in the return stroke
cylinder unloader work?
,8/28/24, 5:14 PM FDNY Z51 FINAL EXAM 2024 MOST RECENT VERSIONS COMPREHENSIVE QUESTIONS WITH DETAILED VERIFIED AN…
In most semi hermetic Cool the motor
compressors, the suction
vapor is used to:
The amount of refrigerant Difference between the high side and load side
that flows through the pressure
orifices of a economizer is
determined by the:
The installation of an inline To remove impurities from the system
refrigerant cleaning system
is advisable:
The type of refrigerant The indirect system
system that is least likely to
leak refrigerant into the
building space that are
cooled
The suction pressure of a 1.69
reciprocating compressor
is 65PSIG. the discharge
pressure of this
compressor is 120PSIG. the
atmospheric is 14.7 PSI. the
compression ratio for the
given condition is closet
to:
A super heated vapor is a ? Dry vapor above the saturation temperature
A refrigerant engineer A faulty cooling tower water level controller
verifies that a condenser
water pump is cavitating.
of the following the most
likely cause for this
condition is:
A centrifugal water pump The water supply to the pump suction inlet is below
is known as a lift pump the pump level
when the:
A TXV is used to maintain Evaporator superheat
constant:
, 8/28/24, 5:14 PM FDNY Z51 FINAL EXAM 2024 MOST RECENT VERSIONS COMPREHENSIVE QUESTIONS WITH DETAILED VERIFIED AN…
The chilled water supply to Yes, this temperature is too high for human comfort
the building is 55F. if the purpose
chiller is being used for
human comfort, should
you be concerned about
this , and why?
The packing gland of a The drip part of the packing gland gives evidence that
centrifugal pump serves there is water in the pump
to:
Capacity control of a Operation of the hot gas bypass valve
reciprocating hermetic
compressor is typically
achieved through
The most important reason A pure liquid refrigerant will enter the metering device
to sub-cool the refrigerant
in the condenser is to
ensure that:
A refrigeration engineer is An expansion valve that is open to wide
logging reading 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.
A low side float valve is The level of the refrigerant in the evaporator
used to maintain:
Regarding fire safety, A1
which ASHARE refrigerant
safety classification
indicates no flammability
and lower the toxicity?
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