Quick ASE Study Guide Practice Test Questions
with Correct Answers.
True or False. Chlorine was found to do damage to the ozone layer? - Correct answer-
True
True or False. Different refrigerant are ok to be mixed together. Pressure characteristics
are a little bit different but should not matter. - Correct answer-False. High pressure
characteristics between R12 and R134a vary considerably. Will result in high head
pressure and high system.
A vehicle has poor air conditioning performance. The customer has added R134a
refrigerant to the system. Technician A says to use a refrigerant identifier. Technician B
says refrigerant mixtures are not recommended, but will not affect system pressures. Who
is correct?
A. Tech A
B. Tech B
C. Both
D. Neither - Correct answer-Tech A is correct
A squeal is heard only when the compressor clutch first engages. Technician A says this
is caused by a loose serpentine belt. Technician B says this is caused by a worn clutch
pulley bearing. Who is correct?
A. Tech A
B. Tech B
C. Both
D. Neither - Correct answer-Tech is correct
An air conditioning system with a variable displacement compressor has poor
performance in high demand situations. All of these could be the cause EXCEPT:
A. A low refrigerant charge.
with Correct Answers.
True or False. Chlorine was found to do damage to the ozone layer? - Correct answer-
True
True or False. Different refrigerant are ok to be mixed together. Pressure characteristics
are a little bit different but should not matter. - Correct answer-False. High pressure
characteristics between R12 and R134a vary considerably. Will result in high head
pressure and high system.
A vehicle has poor air conditioning performance. The customer has added R134a
refrigerant to the system. Technician A says to use a refrigerant identifier. Technician B
says refrigerant mixtures are not recommended, but will not affect system pressures. Who
is correct?
A. Tech A
B. Tech B
C. Both
D. Neither - Correct answer-Tech A is correct
A squeal is heard only when the compressor clutch first engages. Technician A says this
is caused by a loose serpentine belt. Technician B says this is caused by a worn clutch
pulley bearing. Who is correct?
A. Tech A
B. Tech B
C. Both
D. Neither - Correct answer-Tech is correct
An air conditioning system with a variable displacement compressor has poor
performance in high demand situations. All of these could be the cause EXCEPT:
A. A low refrigerant charge.
