Massachusetts Refrigeration License Exam – Practice Questions
& Verified Answers | MA Refrigeration Licensing Exam Review |
2026–2027
, What device measures the specific gravity of a substance? Hydrometer
If a low-pressure chiller has a low-side leak, which of the High suction pressure and High discharge pressure
following will most likely result?
A pressure vessel having an inside diameter of 6" or less 2.5, 2.5
shall be sufficient to withstand ____times the pressure of
the saturation temperature of the refrigerant or ____times
the critical pressure of the refrigerant, whichever is less
Oils, classified as to source, are Animal, vegitabal, mineral
Low pressure systems have what kind of compressor? Centrifugal
What will occur if the strong solution in an absorption Machine will stop cooling and the solution will crystalize
chiller becomes too strong?
If a liquid receiver is designed to receive the refrigerant Receive the pumpdown charge
charge during a pumpdown procedure, it shall have the
capacity to
How are refrigerant blends classified? Based on worst case fractionation
Emergency shutdown procedures, including precautions to Compressor
be observed in case of a breakdown or leak over 55 lbs of
refrigerant charge, shall be displayed on a conspicuous
card located as near as possible to the
_____ and its alloys are suitable for use with ammonia Aluminium
systems
How many gallons of water do you need per pound of 1
ammonia?
Liquid level gauges must be provided with what? Automatic shutoff valves
The rupture disc on a low-pressure chiller typically 15 Psi
releases pressure at
R-12. R-22, and R-40 are considered Group I refrigerants. False
1 HP = ____ Watts? 746 watts
& Verified Answers | MA Refrigeration Licensing Exam Review |
2026–2027
, What device measures the specific gravity of a substance? Hydrometer
If a low-pressure chiller has a low-side leak, which of the High suction pressure and High discharge pressure
following will most likely result?
A pressure vessel having an inside diameter of 6" or less 2.5, 2.5
shall be sufficient to withstand ____times the pressure of
the saturation temperature of the refrigerant or ____times
the critical pressure of the refrigerant, whichever is less
Oils, classified as to source, are Animal, vegitabal, mineral
Low pressure systems have what kind of compressor? Centrifugal
What will occur if the strong solution in an absorption Machine will stop cooling and the solution will crystalize
chiller becomes too strong?
If a liquid receiver is designed to receive the refrigerant Receive the pumpdown charge
charge during a pumpdown procedure, it shall have the
capacity to
How are refrigerant blends classified? Based on worst case fractionation
Emergency shutdown procedures, including precautions to Compressor
be observed in case of a breakdown or leak over 55 lbs of
refrigerant charge, shall be displayed on a conspicuous
card located as near as possible to the
_____ and its alloys are suitable for use with ammonia Aluminium
systems
How many gallons of water do you need per pound of 1
ammonia?
Liquid level gauges must be provided with what? Automatic shutoff valves
The rupture disc on a low-pressure chiller typically 15 Psi
releases pressure at
R-12. R-22, and R-40 are considered Group I refrigerants. False
1 HP = ____ Watts? 746 watts
