1|Page
Q-01 FDNY Exam Newest /Q-01 FDNY Exam
Preparation/Q-01 FDNY Practice Exam With Complete
Questions And Correct Detailed Answers||Newest
Exam!! (Verified Answers) |Already Graded A+|Latest
Exam Version!!!
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
What position is the liquid line service valve normally in? -
Answer-Back-seated
,2|Page
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
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)
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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
The flow of weak liquor to the absorber is controlled by
A) gas pressure
B) throttling device
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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
D) none of the above - Answer-C) during operation
What will make the strong liquor in the absorber
decrease?
A) expansion valve open too much
B) A decrease in evaporator load
Q-01 FDNY Exam Newest /Q-01 FDNY Exam
Preparation/Q-01 FDNY Practice Exam With Complete
Questions And Correct Detailed Answers||Newest
Exam!! (Verified Answers) |Already Graded A+|Latest
Exam Version!!!
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
What position is the liquid line service valve normally in? -
Answer-Back-seated
,2|Page
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
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)
,3|Page
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
The flow of weak liquor to the absorber is controlled by
A) gas pressure
B) throttling device
, 4|Page
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
D) none of the above - Answer-C) during operation
What will make the strong liquor in the absorber
decrease?
A) expansion valve open too much
B) A decrease in evaporator load
