Mazda TTCC007700--1155--0011H Student Manual page 5

AIR CONDITIONING
SG00b - Pre-Test
1. Technician A says the refrigerant used in the A/C system absorbs and releases
large amounts of heat as it changes from a liquid to a gas.
Technician B says as the refrigerant circulates through the tubes and hoses of an
operating A/C system, it constantly changes from a liquid to a gas and back to a
liquid again.
Who is correct?
a. Technician A
b. Technician B
c. Both Technicians
d. Neither technician
3. One BTU is the amount of heat needed at sea level to raise the temperature of
one pound of water;
a. One degree Centigrade
b. Ten degrees Centigrade
c. Ten degrees Fahrenheit
d. One degree Fahrenheit
4. Technician A says the latent heat applied to change a substance from a liquid to a
vapor is called the latent heat of vaporization.
Technician B says the latent heat applied to change a substance from a liquid to a
vapor is called the latent heat of condensation.
a. Technician A
b. Technician B
c. Both Technicians
d. Neither technician
2. Technician A says that at point E in
this illustration the refrigerant is high
pressure vapor.
Technician B says at point E in this
illustration the refrigerant is a low
pressure vapor.
Who is correct?
a. Technician A
b. Technician B
c. Both Technicians
d. Neither technician
TC070-15-01H
SG00b-1