FDNY Z51 RMO EXAM WITH CORRECT
ACTUAL QUESTIONS AND CORRECTLY WELL
DEFINED ANSWERS LATEST ALREADY
GRADED A+ 2025 - 2026
In a multi States and typical compressor each stage Is - ANSWERS-Identicle in
volume to the other stages
In relation to the suction pressure of a compressor the reading of the oil
pressure gauge should read in a range closer to - ANSWERS-15 to 30PSI above
suction pressure
The vantage of a forced draft cooling tower over natural draft cooling tower is
- ANSWERS-Smaller tower size
A system controlled by ATXV shows high discharge pressure and normal
subcooling the causes most probably a - ANSWERS-Refrigerant overcharge
One gallon of water weighs 8.33 pounds - ANSWERS-
, A water chiller is equipped with a reciprocating compressor a thermostat
expansion valve and an air cooled condenser a restriction into refrigerant
liquid line would result in - ANSWERS-High suction superheat
A solenoid valve is used to allow reciprocating refrigeration machine to adapt
to the load on the system the opening of the solenoid valve is caused by -
ANSWERS-Electrical current creating a magnetic field
a centrifugal water pump is considered to be fully primed when - ANSWERS-
the pump is full of liquid
A refrigeration compressor has failed to turn on. the engineer on duty verifies
the electrical circuit to the motor, including all switches and circuit breakers is
complete, according to recomended service practice, the next item to be
checked would likely be the: - ANSWERS-temperature and pressure controls
Refrigerants are characterized by their physical properties including
Flashpoint, refrigeration effect and others, of the refrigerants in commercial
and industrial the highest latent heat and refrigerant effect is: - ANSWERS-
ammonia
which of the following ashrae refrigerant safety classification is the most toxic
- ANSWERS-b3
which of the following ashrae refrigerant safety classification is the most
flammable - ANSWERS-a3
ACTUAL QUESTIONS AND CORRECTLY WELL
DEFINED ANSWERS LATEST ALREADY
GRADED A+ 2025 - 2026
In a multi States and typical compressor each stage Is - ANSWERS-Identicle in
volume to the other stages
In relation to the suction pressure of a compressor the reading of the oil
pressure gauge should read in a range closer to - ANSWERS-15 to 30PSI above
suction pressure
The vantage of a forced draft cooling tower over natural draft cooling tower is
- ANSWERS-Smaller tower size
A system controlled by ATXV shows high discharge pressure and normal
subcooling the causes most probably a - ANSWERS-Refrigerant overcharge
One gallon of water weighs 8.33 pounds - ANSWERS-
, A water chiller is equipped with a reciprocating compressor a thermostat
expansion valve and an air cooled condenser a restriction into refrigerant
liquid line would result in - ANSWERS-High suction superheat
A solenoid valve is used to allow reciprocating refrigeration machine to adapt
to the load on the system the opening of the solenoid valve is caused by -
ANSWERS-Electrical current creating a magnetic field
a centrifugal water pump is considered to be fully primed when - ANSWERS-
the pump is full of liquid
A refrigeration compressor has failed to turn on. the engineer on duty verifies
the electrical circuit to the motor, including all switches and circuit breakers is
complete, according to recomended service practice, the next item to be
checked would likely be the: - ANSWERS-temperature and pressure controls
Refrigerants are characterized by their physical properties including
Flashpoint, refrigeration effect and others, of the refrigerants in commercial
and industrial the highest latent heat and refrigerant effect is: - ANSWERS-
ammonia
which of the following ashrae refrigerant safety classification is the most toxic
- ANSWERS-b3
which of the following ashrae refrigerant safety classification is the most
flammable - ANSWERS-a3
