Page 1 of 61
Q-01 FDNY 2025/2026 EXAM BANK CURRENTLY
TESTING QUESTIONS WITH CORRECT AND
DETAILED ANSWERS (VERIFIED) GUARANTEED
PASS/TOP-RATED A+.
Q-01 FDNY
Ace the FDNY Q-01 Certificate of Fitness exam with this targeted
guide, designed to master refrigeration system operation,
emergency protocols, and NYC code compliance. This resource
delivers practical, scenario-based questions and verified
solutions aligned with FDNY's specific safety and operational
standards.
Rupture members, when used in parallel with a relief valve,
are not to exceed _____% above designed working pressure
...... ANSWER ....... 20%
Butterfly valve: where can it be used? ...... ANSWER .......
Can be used on the inlet and outlet of a water pump
What electrical motor protection device automatically
resets itself? ...... ANSWER ....... The thermal protector
746 watts equals how many kilowatt hours? ...... ANSWER
....... .746 kilowatt hours
, Page 2 of 61
What position is the liquid line service valve normally in?
...... ANSWER ....... Back-seated
In an operating evaporator, oil stays on top of which
refrigerant? ...... ANSWER ....... Carbon dioxide, R-744
At what pressure does the relief valve blow on a high
pressure machine? ...... ANSWER ....... 300 psi
What would indicate a restriction (such as dirt or scale) in
the liquid line? ...... ANSWER ....... Frost immediately
after the restriction
What does solubility mean? ...... ANSWER ....... The
ability of a refrigerant to mix with other substances
Charging Vapor —In a compression system, where do you
charge the vapor? ...... ANSWER ....... Suction side of the
compressor at the Suction Service Valve
, Page 3 of 61
When comparing a brine with s PH of 8 to one with a PH of
10, its alkalinity is: ...... ANSWER ....... 100 times greater
(ex. PH 8 to PH 9 is 10 times greater)
In an efficiently operating induced draft cooling tower, the
leaving water is between: ...... ANSWER ....... Dry bulb
and wet bulb temperature
To produce the desired evaporator temperature, the power
input is reduced by keeping head pressure... ...... ANSWER
....... Head pressure as low as possible & suction
pressure as high as needed
The accumulator is usually between the... ...... ANSWER
....... Compressor and evaporator
An oiling system in a large centrifugal system should consist
of at least... ...... ANSWER ....... Reservoir, pump and
distribution lines
In an evaporator that chills brine, the greatest cooling effect
on the brine results from the... ...... ANSWER ....... Boiling
of low pressure liquid
, Page 4 of 61
The flow of weak liquor to the absorber is controlled by
A) gas pressure
B) throttling device
C) float valve
D) pressure of the strong liquor pump ...... ANSWER .......
B) throttling device
The best way of detecting ammonia brine is by using
A) CO2 gas
B) potassium of lime
C) Nessler reagent
D) carbonate of soda ...... ANSWER ....... C) Nessler
reagent
The best time to purge an 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
Q-01 FDNY 2025/2026 EXAM BANK CURRENTLY
TESTING QUESTIONS WITH CORRECT AND
DETAILED ANSWERS (VERIFIED) GUARANTEED
PASS/TOP-RATED A+.
Q-01 FDNY
Ace the FDNY Q-01 Certificate of Fitness exam with this targeted
guide, designed to master refrigeration system operation,
emergency protocols, and NYC code compliance. This resource
delivers practical, scenario-based questions and verified
solutions aligned with FDNY's specific safety and operational
standards.
Rupture members, when used in parallel with a relief valve,
are not to exceed _____% above designed working pressure
...... ANSWER ....... 20%
Butterfly valve: where can it be used? ...... ANSWER .......
Can be used on the inlet and outlet of a water pump
What electrical motor protection device automatically
resets itself? ...... ANSWER ....... The thermal protector
746 watts equals how many kilowatt hours? ...... ANSWER
....... .746 kilowatt hours
, Page 2 of 61
What position is the liquid line service valve normally in?
...... ANSWER ....... Back-seated
In an operating evaporator, oil stays on top of which
refrigerant? ...... ANSWER ....... Carbon dioxide, R-744
At what pressure does the relief valve blow on a high
pressure machine? ...... ANSWER ....... 300 psi
What would indicate a restriction (such as dirt or scale) in
the liquid line? ...... ANSWER ....... Frost immediately
after the restriction
What does solubility mean? ...... ANSWER ....... The
ability of a refrigerant to mix with other substances
Charging Vapor —In a compression system, where do you
charge the vapor? ...... ANSWER ....... Suction side of the
compressor at the Suction Service Valve
, Page 3 of 61
When comparing a brine with s PH of 8 to one with a PH of
10, its alkalinity is: ...... ANSWER ....... 100 times greater
(ex. PH 8 to PH 9 is 10 times greater)
In an efficiently operating induced draft cooling tower, the
leaving water is between: ...... ANSWER ....... Dry bulb
and wet bulb temperature
To produce the desired evaporator temperature, the power
input is reduced by keeping head pressure... ...... ANSWER
....... Head pressure as low as possible & suction
pressure as high as needed
The accumulator is usually between the... ...... ANSWER
....... Compressor and evaporator
An oiling system in a large centrifugal system should consist
of at least... ...... ANSWER ....... Reservoir, pump and
distribution lines
In an evaporator that chills brine, the greatest cooling effect
on the brine results from the... ...... ANSWER ....... Boiling
of low pressure liquid
, Page 4 of 61
The flow of weak liquor to the absorber is controlled by
A) gas pressure
B) throttling device
C) float valve
D) pressure of the strong liquor pump ...... ANSWER .......
B) throttling device
The best way of detecting ammonia brine is by using
A) CO2 gas
B) potassium of lime
C) Nessler reagent
D) carbonate of soda ...... ANSWER ....... C) Nessler
reagent
The best time to purge an 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
