9/20/25, 8:23 AM Q-01 FDNY Exam Questions & Answers | Latest Already Graded A+ UPDATE 2025|2026 !! Flashcards | Quizlet
Q-01 FDNY Exam Questions & Answers | Latest
Already Graded A+ UPDATE 2025|2026 !!
Save
Terms in this set (196)
Rupture members, when 20%
used in parallel with a
relief valve, are not to
exceed _____% above
designed working
pressure
Butterfly valve: where can Can be used on the inlet and outlet of a water pump
it be used?
What electrical motor The thermal protector
protection device
automatically resets itself?
746 watts equals how .746 kilowatt hours
many kilowatt hours?
What position is the liquid Back-seated
line service valve normally
in?
In an operating Carbon dioxide, R-744
evaporator, oil stays on
top of which refrigerant?
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,9/20/25, 8:23 AM Q-01 FDNY Exam Questions & Answers | Latest Already Graded A+ UPDATE 2025|2026 !! Flashcards | Quizlet
At what pressure does the 300 psi
relief valve blow on a high
pressure machine?
What would indicate a Frost immediately after the restriction
restriction (such as dirt or
scale) in the liquid line?
What does solubility The ability of a refrigerant to mix with other
mean? substances
Charging Vapor —In a Suction side of the compressor at the Suction Service
compression system, Valve
where do you charge the
vapor?
When comparing a brine 100 times greater (ex. PH 8 to PH 9 is 10 times greater)
with s PH of 8 to one with
a PH of 10, its alkalinity is:
In an efficiently operating Dry bulb and wet bulb temperature
induced draft cooling
tower, the leaving water is
between:
To produce the desired Head pressure as low as possible & suction pressure
evaporator temperature, as high as needed
the power input is
reduced by keeping head
pressure...
The accumulator is usually Compressor and evaporator
between the...
An oiling system in a large Reservoir, pump and distribution lines
centrifugal system should
consist of at least...
In an evaporator that chills Boiling of low pressure liquid
brine, the greatest cooling
effect on the brine results
from the...
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,9/20/25, 8:23 AM Q-01 FDNY Exam Questions & Answers | Latest Already Graded A+ UPDATE 2025|2026 !! Flashcards | Quizlet
The flow of weak liquor to B) throttling device
the absorber is controlled
by
A) gas pressure
B) throttling device
C) float valve
D) pressure of the strong
liquor pump
The best way of detecting C) Nessler reagent
ammonia brine is by using
A) CO2 gas
B) potassium of lime
C) Nessler reagent
D) carbonate of soda
The best time to purge an C) during operation
ammonia plant with 250
lbs. of ammonia is
A) during shut-down,
because you will lose
ammonia
B) while charging the plant
C) during operation
D) none of the above
What will make the strong B) A decrease in evaporator load
liquor in the absorber
decrease?
A) expansion valve open
too much
B) A decrease in
evaporator load
C) An increase in
evaporator load
D) Too much steam on the
generator
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, 9/20/25, 8:23 AM Q-01 FDNY Exam Questions & Answers | Latest Already Graded A+ UPDATE 2025|2026 !! Flashcards | Quizlet
Which of the following D) A rupture member automatically ruptures at a
statements is incorrect? predetermined temperature
A) A service valve is a key-
operated shut-off valve
used during shipment,
installation and repairs
B) Brine is a liquid cooled
by refrigeration and used
for the transmission of
heat
C) A fusible plug has a set-
temperature fusible
member to relieve
pressure
D) A rupture member
automatically ruptures at a
predetermined
temperature
Oil in a refrigerant should D) not contain moisture
A) have a high pour point
B) have a low flash point
C) have a high viscosity
D) not contain moisture
In an NH3 dry expansion A) 7 to 10° F
evaporator with TXV and
bulb clamped properly on
the outlet of the
evaporator, the superheat
is
A) 7 to 10° F
B) 5 to 9° F
C) 20 to 30° F
D) 1 to 2° F
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Q-01 FDNY Exam Questions & Answers | Latest
Already Graded A+ UPDATE 2025|2026 !!
Save
Terms in this set (196)
Rupture members, when 20%
used in parallel with a
relief valve, are not to
exceed _____% above
designed working
pressure
Butterfly valve: where can Can be used on the inlet and outlet of a water pump
it be used?
What electrical motor The thermal protector
protection device
automatically resets itself?
746 watts equals how .746 kilowatt hours
many kilowatt hours?
What position is the liquid Back-seated
line service valve normally
in?
In an operating Carbon dioxide, R-744
evaporator, oil stays on
top of which refrigerant?
https://quizlet.com/1079484878/q-01-fdny-exam-questions-answers-latest-already-graded-a-update-20252026-flash-cards/?new 1/50
,9/20/25, 8:23 AM Q-01 FDNY Exam Questions & Answers | Latest Already Graded A+ UPDATE 2025|2026 !! Flashcards | Quizlet
At what pressure does the 300 psi
relief valve blow on a high
pressure machine?
What would indicate a Frost immediately after the restriction
restriction (such as dirt or
scale) in the liquid line?
What does solubility The ability of a refrigerant to mix with other
mean? substances
Charging Vapor —In a Suction side of the compressor at the Suction Service
compression system, Valve
where do you charge the
vapor?
When comparing a brine 100 times greater (ex. PH 8 to PH 9 is 10 times greater)
with s PH of 8 to one with
a PH of 10, its alkalinity is:
In an efficiently operating Dry bulb and wet bulb temperature
induced draft cooling
tower, the leaving water is
between:
To produce the desired Head pressure as low as possible & suction pressure
evaporator temperature, as high as needed
the power input is
reduced by keeping head
pressure...
The accumulator is usually Compressor and evaporator
between the...
An oiling system in a large Reservoir, pump and distribution lines
centrifugal system should
consist of at least...
In an evaporator that chills Boiling of low pressure liquid
brine, the greatest cooling
effect on the brine results
from the...
https://quizlet.com/1079484878/q-01-fdny-exam-questions-answers-latest-already-graded-a-update-20252026-flash-cards/?new 2/50
,9/20/25, 8:23 AM Q-01 FDNY Exam Questions & Answers | Latest Already Graded A+ UPDATE 2025|2026 !! Flashcards | Quizlet
The flow of weak liquor to B) throttling device
the absorber is controlled
by
A) gas pressure
B) throttling device
C) float valve
D) pressure of the strong
liquor pump
The best way of detecting C) Nessler reagent
ammonia brine is by using
A) CO2 gas
B) potassium of lime
C) Nessler reagent
D) carbonate of soda
The best time to purge an C) during operation
ammonia plant with 250
lbs. of ammonia is
A) during shut-down,
because you will lose
ammonia
B) while charging the plant
C) during operation
D) none of the above
What will make the strong B) A decrease in evaporator load
liquor in the absorber
decrease?
A) expansion valve open
too much
B) A decrease in
evaporator load
C) An increase in
evaporator load
D) Too much steam on the
generator
https://quizlet.com/1079484878/q-01-fdny-exam-questions-answers-latest-already-graded-a-update-20252026-flash-cards/?new 3/50
, 9/20/25, 8:23 AM Q-01 FDNY Exam Questions & Answers | Latest Already Graded A+ UPDATE 2025|2026 !! Flashcards | Quizlet
Which of the following D) A rupture member automatically ruptures at a
statements is incorrect? predetermined temperature
A) A service valve is a key-
operated shut-off valve
used during shipment,
installation and repairs
B) Brine is a liquid cooled
by refrigeration and used
for the transmission of
heat
C) A fusible plug has a set-
temperature fusible
member to relieve
pressure
D) A rupture member
automatically ruptures at a
predetermined
temperature
Oil in a refrigerant should D) not contain moisture
A) have a high pour point
B) have a low flash point
C) have a high viscosity
D) not contain moisture
In an NH3 dry expansion A) 7 to 10° F
evaporator with TXV and
bulb clamped properly on
the outlet of the
evaporator, the superheat
is
A) 7 to 10° F
B) 5 to 9° F
C) 20 to 30° F
D) 1 to 2° F
https://quizlet.com/1079484878/q-01-fdny-exam-questions-answers-latest-already-graded-a-update-20252026-flash-cards/?new 4/50
