MASSACHUSETTS REFRIGERATION LICENSE COMPREHENSIVE TEST 2026 QUESTIONS WITH SOLUTIONS GRADED A+

MASSACHUSETTS REFRIGERATION LICENSE
ACTUAL EXAM PAPER 2026 QUESTIONS
WITH SOLUTIONS GRADED A+

●● A compressor in which the increase in pressure is attained by
changing the
internal volume of the compression chamber. Answer: Positive
displacement compressor


●● A liquid used for the transmission of heat, without a change in state
and having no
Flash point or a flash point above 150° F is known as: Answer:
Secondary coolant


●● Stop valves shall not be permitted between the system and the:
Answer: Relief valve


●● Pressure relief valves shall be marked with data from Answer:
Section VIll Division 1 of the ASME boiler & pressure code


●● Liquid receivers shall not occupy more than __%volume when the
temperature of the refrigerant is 90° Answer: 90

, ●● 112. The total amount Freon to be stored in the machine room (not
including the Freon in the system) Answer: 330


●● How many forces operate a thermostatic expansion valve? Answer: 3


●● How many opening forces operate a thermostatic expansion valve?
Answer: 1


●● How many closing forces operate a thermostatic expansion valve
Answer: 3


●● When an electronic bridge is in balance, the bridge output will be?
Answer: 0v


●● An electronic bridge is basically? Answer: Wheatstone


●● If two 500 ohm resistors are wired in series the total resistance will
be? Answer: 1,000 ohms


●● The equation for ohms law is Answer: volts= amps X ohms


●● Single Pole Double Throw Switch requires(not including ground)
Answer: 3 wires