License Test. Questions with Correct
Verified Answers 2026-2027. Graded A
___________ a refrigerant that is not miscible (capable of being mixed)
with mineral oil. – ANS R-134A is
___________ has the ability to absorb the most moisture - ANSA PAG oil
___________ is a lubricant is most commonly used with CFC refrigerants. -
ANSMineral Oil
___________ must not be used in any refrigeration system that contains
halogenated refrigerant. - ANSMagnesium
____________ is the part of the system that stores refrigerant until it is
needed in the evaporator - ANSThe receiver
____________ is the type of heat that is absorbed or extracted from a
substance when the substance changes state - ANSLatent Heat
_____________ is a lubricant that is most commonly used with R-134a
refrigerant. - ANSPAG's (Ester)
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,_____________ is a type of metering device is used in a 12 seer split air
conditioning system. - ANSA TXV
_____________ is the part of the system that prevents liquids from
entering the compressor. - ANSThe accumulator
_____________ Is the wire diameter of a 60 foot service cable for a 1 1/2
ton unit. - ANSNo 10 or 12
______________ compressor is not internally driven by a motor. - ANSThe
open type
______________ is called the eutectic point - ANSFreezing temperature of
a certain solution
______________ is the measurement of a resistance to the flow of
electrons - ANSOhms
______________ is the type of equipment that uses refrigerant that boils
above 50 F at atmospheric pressure - ANSLow Pressure
______________ when the receiver is protected with a pressure relief on a
limited charge system. - ANSThe design pressure of the receiver need not
exceed the setting on the pressure relief
______________ would be the minimum bending radius on 1/2" soft
copper tubing. - ANS2 1/2"
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, _______________ are the two contacts that could be jumped to cause the
gas burner to come on. - ANSR and W
_______________ could cause an explosion if it is used to purge an air
conditioning system while brazing. - ANSOxygen
_______________ is a type of compressor is considered a non-positive
displacement compressor. - ANSHermetic
_______________ is the decibel range that is considered not objectionable
to the human ear. - ANS0 - 90
________________ is the component that is commonly used in a recycling
machine that is not found in a recovery machine. - ANSAn oil separator
________________ refers to the temperature at which oil starts to produce
a waxy substance. - ANSFloc point
________________ the total amount of heat present in a given substance.
- ANSEnthalpy is
_________________ is a type of compressor that is completely sealed and
must be replaced if it has internal damage. - ANSHermetic
_________________ is commonly used with a two speed compressor. -
ANSA two stage thermostat
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