Air Conditioning Certification Exam
(Exam Code A-02) questions and
answers rated A+
sensible heat. - correct answer ✔✔ Heat which causes a change in temperature of a substance
is called;
latent heat. - correct answer ✔✔ Heat which causes a change in state of a material without a
change in temperature is called;
superheat. - correct answer ✔✔ Heat which is added to a vapor after the change of state occurs
is called;
conduction, convection, radiation. - correct answer ✔✔ Heat can travel by;
convection . - correct answer ✔✔ The movement of heat by way of fluid (or air) is called;
conduction . - correct answer ✔✔ The movement of heat by direct contact is called;
the British Thermal Unit (Btu). - correct answer ✔✔ The standard unit for measuring the
quantity of heat in a substance is;
it condenses. - correct answer ✔✔ A refrigerat gives up heat when;
insure liquid refrigerant does not enter the compressor. - correct answer ✔✔ It is desirable for
refrigerant in the suction line to be slightly superheated in order to;
, low pressure/ low temperature. - correct answer ✔✔ The state of refrigerant in the suction line
should be;
high pressure/ highly superheated liquid. - correct answer ✔✔ The state of the refrigerant
entering the condenser is;
Transfers heat from the refrigerant to the ambient air. - correct answer ✔✔ The evaporator;
d) Flammability. - correct answer ✔✔ Which of the following is NOT a thermodynamic property
of refrigerants?
a) Critical point.
b) Saturation point.
c) Enthalpy.
d) Flammability.
compression, condensation, expansion, vaporization. - correct answer ✔✔ The sequential order
of steps in the vapor - compression process are;
70.2 Psig. - correct answer ✔✔ If a 30 pound cylinder of reclaimed R-12 refrigerant has been
stored over night at 70°F, the pressure in the cylinder should be approximately;
d) either "A" or "B". - correct answer ✔✔ Pressures lower than atmospheric are measured in;
a) inches of mercury
b) microns
c) Psig
d) either "A" or "B".
(Exam Code A-02) questions and
answers rated A+
sensible heat. - correct answer ✔✔ Heat which causes a change in temperature of a substance
is called;
latent heat. - correct answer ✔✔ Heat which causes a change in state of a material without a
change in temperature is called;
superheat. - correct answer ✔✔ Heat which is added to a vapor after the change of state occurs
is called;
conduction, convection, radiation. - correct answer ✔✔ Heat can travel by;
convection . - correct answer ✔✔ The movement of heat by way of fluid (or air) is called;
conduction . - correct answer ✔✔ The movement of heat by direct contact is called;
the British Thermal Unit (Btu). - correct answer ✔✔ The standard unit for measuring the
quantity of heat in a substance is;
it condenses. - correct answer ✔✔ A refrigerat gives up heat when;
insure liquid refrigerant does not enter the compressor. - correct answer ✔✔ It is desirable for
refrigerant in the suction line to be slightly superheated in order to;
, low pressure/ low temperature. - correct answer ✔✔ The state of refrigerant in the suction line
should be;
high pressure/ highly superheated liquid. - correct answer ✔✔ The state of the refrigerant
entering the condenser is;
Transfers heat from the refrigerant to the ambient air. - correct answer ✔✔ The evaporator;
d) Flammability. - correct answer ✔✔ Which of the following is NOT a thermodynamic property
of refrigerants?
a) Critical point.
b) Saturation point.
c) Enthalpy.
d) Flammability.
compression, condensation, expansion, vaporization. - correct answer ✔✔ The sequential order
of steps in the vapor - compression process are;
70.2 Psig. - correct answer ✔✔ If a 30 pound cylinder of reclaimed R-12 refrigerant has been
stored over night at 70°F, the pressure in the cylinder should be approximately;
d) either "A" or "B". - correct answer ✔✔ Pressures lower than atmospheric are measured in;
a) inches of mercury
b) microns
c) Psig
d) either "A" or "B".
