A/C & Heating Certification Test Exam
Practice Questions & Answers New Update
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Terms in this set (109)
On which of the Heat flow, Heat absorption, Pressure and Boiling
following laws of nature Points
is the air-conditioning
system based?
Which of the following D. None of these answers are correct
statements is not
correct?
A. Refrigerant leaves
the compressor as a
high-pressure, high-
temperature liquid.
B. Refrigerant leaves
the condenser as a low-
pressure, high-
temperature liquid.
C. Refrigerant returns to
the compressor as a
low-pressure, high-
temperature vapor.
D. None of these
answers are correct.
,Which of the following C. The accumulator is located between the
statements is not condenser and the receiver/dryer.
correct?
A. The condenser is
normally mounted in
front of the radiator.
B. The receiver/dryer is
a storage tank for liquid
refrigerant from the
condenser.
C. The accumulator is
located between the
condenser and the
receiver/dryer.
D. All answers are
correct
Which of the following C. R-12 is destructive to Earth's ozone layer
statements concerning
R-12 is correct?
A. R-12 is a
hydroflurocarbon.
B.R-12 boils at 0
degrees Fahrenheit (-18
Celsius)
C. R-12 is destructive to
Earth's ozone layer
D. All answers are
correct
Which of the following Ambient temperature switch, Thermostatic switch,
may be electrically Pressure cycling switch
connected in series
with the compressor
electromagnetic
clutch?
,Which of the following PAG oil
oils can be used in an
R-134a system?
A heating system C. receiver/dryer
includes all of the
following parts except:
A. heater core B.
ventilation system
C. receiver/dryer D.
distribution plenum
Which of the following A. The evaporator changes heated refrigerant to
statements is NOT a liquid.
correct?
A. The evaporator
changes heated
refrigerant to a liquid.
B. Automatic
temperature controls
maintain a set
passenger
compartment
temperature.
C. Air-
conditioning/heater
systems can be
computer controlled.
D.Heaters and air-
conditioners use the
same plenum
chambers.
Heater control valves cable, thermostat, and vacuum motor
are operated by a
___________________.
, All materials or -459 degrees Fahrenheit (-273 degrees Celsius)
substances, as cold as
________________, have heat
in them.
Technician A says the C. Both A and B
thermostatic expansion
valve and the fixed
orifice tube perform
the same function.
Technician B says heat
from the evaporator
core surface is lost to
the boiling and
vaporizing refrigerant.
Who is correct?
A. A only
B. B only
C. Both A and B
D. Neither A nor B
Technician A says C. Both A and B
suction lines connect
the accumulator to the
compressor. Technician
B says discharge lines
connect the
compressor to the
condenser. Who is
correct?
A. A only
B. B only
C. Both A and B
D. Neither A nor B
Practice Questions & Answers New Update
Save
Terms in this set (109)
On which of the Heat flow, Heat absorption, Pressure and Boiling
following laws of nature Points
is the air-conditioning
system based?
Which of the following D. None of these answers are correct
statements is not
correct?
A. Refrigerant leaves
the compressor as a
high-pressure, high-
temperature liquid.
B. Refrigerant leaves
the condenser as a low-
pressure, high-
temperature liquid.
C. Refrigerant returns to
the compressor as a
low-pressure, high-
temperature vapor.
D. None of these
answers are correct.
,Which of the following C. The accumulator is located between the
statements is not condenser and the receiver/dryer.
correct?
A. The condenser is
normally mounted in
front of the radiator.
B. The receiver/dryer is
a storage tank for liquid
refrigerant from the
condenser.
C. The accumulator is
located between the
condenser and the
receiver/dryer.
D. All answers are
correct
Which of the following C. R-12 is destructive to Earth's ozone layer
statements concerning
R-12 is correct?
A. R-12 is a
hydroflurocarbon.
B.R-12 boils at 0
degrees Fahrenheit (-18
Celsius)
C. R-12 is destructive to
Earth's ozone layer
D. All answers are
correct
Which of the following Ambient temperature switch, Thermostatic switch,
may be electrically Pressure cycling switch
connected in series
with the compressor
electromagnetic
clutch?
,Which of the following PAG oil
oils can be used in an
R-134a system?
A heating system C. receiver/dryer
includes all of the
following parts except:
A. heater core B.
ventilation system
C. receiver/dryer D.
distribution plenum
Which of the following A. The evaporator changes heated refrigerant to
statements is NOT a liquid.
correct?
A. The evaporator
changes heated
refrigerant to a liquid.
B. Automatic
temperature controls
maintain a set
passenger
compartment
temperature.
C. Air-
conditioning/heater
systems can be
computer controlled.
D.Heaters and air-
conditioners use the
same plenum
chambers.
Heater control valves cable, thermostat, and vacuum motor
are operated by a
___________________.
, All materials or -459 degrees Fahrenheit (-273 degrees Celsius)
substances, as cold as
________________, have heat
in them.
Technician A says the C. Both A and B
thermostatic expansion
valve and the fixed
orifice tube perform
the same function.
Technician B says heat
from the evaporator
core surface is lost to
the boiling and
vaporizing refrigerant.
Who is correct?
A. A only
B. B only
C. Both A and B
D. Neither A nor B
Technician A says C. Both A and B
suction lines connect
the accumulator to the
compressor. Technician
B says discharge lines
connect the
compressor to the
condenser. Who is
correct?
A. A only
B. B only
C. Both A and B
D. Neither A nor B
