Q-01 FDNY Exam Newest /Q-01 FDNY Exam
Preparation/Q-01 FDNY Practice Exam With Complete
Questions And Correct Detailed Answers (Verified
Answers) |Already Graded A+|Brand New Version!!
Which of the following statements is incorrect?
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 -
ans -D) A rupture member automatically ruptures at a predetermined
temperature
Oil in a refrigerant should
A) have a high pour point
B) have a low flash point
C) have a high viscosity
D) not contain moisture - ans -D) not contain moisture
In an NH3 dry expansion 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 - ans -A) 7 to 10° F
The setting of a fusible plug is
A) 280° F
B) 300° F
C) 380° F
D) 300 psig. - ans -A) 280° F
If the insulation was removed from the bulb of the expansion valve, what would
happen? - ans -Flooded evaporator —the TXV bulb opens in a range from 45 to
,85° F. If the insulation was removed, the bulb would sense the temperature in the
machine room and keep the TXV open, thus flooding the evaporator.
On the most common three-phase, four-wire service, the voltage between any
phase and neutral should be
A) 105 volts
B) 120 volts
C) 208 volts
D) 220 volts - ans -B) 120 volts
A refrigerant overcharge would
A) increase head pressure
B) decrease head pressure
C) decrease solution-side pressure
D) decrease discharge-side pressure - ans -A) increase head pressure
A dryer is generally installed with other equipment in a commercial Freon
compressor system. The recommended location of this dryer is on the
A) high-pressure line between condenser and reciever
B) suction line between evaporator and compressor
C) discharge line between compressor and condenser
D) liquid line between receiver and expansion valve - ans -D) liquid line between
receiver and expansion valve
R-22 —What does it smell like? - ans -Odorless
Desirable characteristics of a refrigerant:
A) High __________
B) Low __________ - ans -A) High critical point
B) Low freezing point
Centrifugal Feed Water Pump
A) Start-up procedure
B) Shut-down procedure - ans -A) Start-up procedure
1) Lock-out, tag-out
2) Close discharge valve
3) Open suction valve
,4) Turn on
5) Open discharge valve
B) Shut-down procedure
1) Lock-out, tag-out
2) close suction valve
3) close discharge valve
In order to vary the capacity of an absorption plant, you should regulate the.. -
ans -Flow of the water to the condenser
600,000 btu per hour equals how many tons of refrigeration?
A) 300
B) 3,000
C) 500
D) 50 - ans -D) 50
Heat transfer takes place by
A) evaporation, conduction and condensation
B) radiation, conduction and convection
C) condensation, evaporation and radiation
D) sublimation, evaporation and convection - ans -B) radiation, conduction and
convection
Refrigerant recovery is defined as
A) Removing the refrigerant from a system and storing it in an external container,
with the lowest emissions possible.
B) Reprocessing a refrigerant into a new product that can be reused in another
system.
C) The process of cleaning a refrigerant of dirt and contaminates, such as oil, acid,
foreign material and non condensibles.
D) None of the above. - ans -A) Removing the refrigerant from a system and
storing it in an external container, with the lowest emissions possible.
A 10-ton refrigeration unit has a capacity of
A) 2,000 btu/minute
B) 12,000 btu/minute
C) 20,000 btu/minute
, D) 144,000 btu/day - ans -A) 2,000 btu/minute
In an absorption system, the medium normally used to vaporize refrigerant and
increase its temperature is
A) water
B) propane
C) ethylene
D) steam - ans -D) steam
Any water present in the refrigerant side of a Freon refrigerating system causes a
A) clogged oil trap
B) frozen discharge valve
C) clogged scale trap
D) frozen expansion valve - ans -D) frozen expansion valve
The subcooling effect of the liquid refrigerant just before the expansion valve
causes increased
A) horsepower
B) refrigeration effect
C) expansion valve capacity
D) refrigerant flow - ans -B) refrigeration effect
In a flooded evaporator using an accumulator and float valve, flash gas
A) passes directly into the evaporator
B) passes directly into the suction line
C) does not occur
D) stays in the receiver - ans -B) passes directly into the suction line
According to Title 49 CFR Section 173.34(e), cylinders and tanks must be
hydrostatically retested
A) once a year by visual inspection
B) a minimum of every 5 years
C) every six months
D) a minimum of once every 2 years - ans -B) a minimum of every 5 years
Preparation/Q-01 FDNY Practice Exam With Complete
Questions And Correct Detailed Answers (Verified
Answers) |Already Graded A+|Brand New Version!!
Which of the following statements is incorrect?
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 -
ans -D) A rupture member automatically ruptures at a predetermined
temperature
Oil in a refrigerant should
A) have a high pour point
B) have a low flash point
C) have a high viscosity
D) not contain moisture - ans -D) not contain moisture
In an NH3 dry expansion 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 - ans -A) 7 to 10° F
The setting of a fusible plug is
A) 280° F
B) 300° F
C) 380° F
D) 300 psig. - ans -A) 280° F
If the insulation was removed from the bulb of the expansion valve, what would
happen? - ans -Flooded evaporator —the TXV bulb opens in a range from 45 to
,85° F. If the insulation was removed, the bulb would sense the temperature in the
machine room and keep the TXV open, thus flooding the evaporator.
On the most common three-phase, four-wire service, the voltage between any
phase and neutral should be
A) 105 volts
B) 120 volts
C) 208 volts
D) 220 volts - ans -B) 120 volts
A refrigerant overcharge would
A) increase head pressure
B) decrease head pressure
C) decrease solution-side pressure
D) decrease discharge-side pressure - ans -A) increase head pressure
A dryer is generally installed with other equipment in a commercial Freon
compressor system. The recommended location of this dryer is on the
A) high-pressure line between condenser and reciever
B) suction line between evaporator and compressor
C) discharge line between compressor and condenser
D) liquid line between receiver and expansion valve - ans -D) liquid line between
receiver and expansion valve
R-22 —What does it smell like? - ans -Odorless
Desirable characteristics of a refrigerant:
A) High __________
B) Low __________ - ans -A) High critical point
B) Low freezing point
Centrifugal Feed Water Pump
A) Start-up procedure
B) Shut-down procedure - ans -A) Start-up procedure
1) Lock-out, tag-out
2) Close discharge valve
3) Open suction valve
,4) Turn on
5) Open discharge valve
B) Shut-down procedure
1) Lock-out, tag-out
2) close suction valve
3) close discharge valve
In order to vary the capacity of an absorption plant, you should regulate the.. -
ans -Flow of the water to the condenser
600,000 btu per hour equals how many tons of refrigeration?
A) 300
B) 3,000
C) 500
D) 50 - ans -D) 50
Heat transfer takes place by
A) evaporation, conduction and condensation
B) radiation, conduction and convection
C) condensation, evaporation and radiation
D) sublimation, evaporation and convection - ans -B) radiation, conduction and
convection
Refrigerant recovery is defined as
A) Removing the refrigerant from a system and storing it in an external container,
with the lowest emissions possible.
B) Reprocessing a refrigerant into a new product that can be reused in another
system.
C) The process of cleaning a refrigerant of dirt and contaminates, such as oil, acid,
foreign material and non condensibles.
D) None of the above. - ans -A) Removing the refrigerant from a system and
storing it in an external container, with the lowest emissions possible.
A 10-ton refrigeration unit has a capacity of
A) 2,000 btu/minute
B) 12,000 btu/minute
C) 20,000 btu/minute
, D) 144,000 btu/day - ans -A) 2,000 btu/minute
In an absorption system, the medium normally used to vaporize refrigerant and
increase its temperature is
A) water
B) propane
C) ethylene
D) steam - ans -D) steam
Any water present in the refrigerant side of a Freon refrigerating system causes a
A) clogged oil trap
B) frozen discharge valve
C) clogged scale trap
D) frozen expansion valve - ans -D) frozen expansion valve
The subcooling effect of the liquid refrigerant just before the expansion valve
causes increased
A) horsepower
B) refrigeration effect
C) expansion valve capacity
D) refrigerant flow - ans -B) refrigeration effect
In a flooded evaporator using an accumulator and float valve, flash gas
A) passes directly into the evaporator
B) passes directly into the suction line
C) does not occur
D) stays in the receiver - ans -B) passes directly into the suction line
According to Title 49 CFR Section 173.34(e), cylinders and tanks must be
hydrostatically retested
A) once a year by visual inspection
B) a minimum of every 5 years
C) every six months
D) a minimum of once every 2 years - ans -B) a minimum of every 5 years
