AUTO MECHANICS TEST 2025 QUESTIONS
AND ANSWERS.
Which system uses a confined gas to cool the passenger area of the
vehicle?
A ASE
B EGR
C HVAC
D PCV - correct answer - C
In a hybrid vehicle, what keeps the high-voltage batteries from
overheating?
A blower motor
B exhaust system
C radiator fan
D turbo - correct answer - A
There is plain water dripping on the passenger's feet in a vehicle, which
is the most likely cause?
A The condenser drain is plugged up.
B The evaporator drain is plugged up.
C The heater core is stopped up.
D The radiator is stopped up. - correct answer - B
,The A/C serpentine drive belt keeps jumping off its pulley whenever the
A/C is turned on. Which is the most likely cause?
A A pulley or bracket is misaligned.
B The belt is made of the wrong material.
C The belt is too small.
D The belt is too old. - correct answer - A
What is the name of the heating part that changes the airflow from the
foot area to the vent area?
A blend door
B bypass door
C compression door
D blower door - correct answer - A
Which air conditioner component is located directly in front of the
radiator on a vehicle?
A compressor
B condenser
C dryer
D evaporator - correct answer - B
On a hybrid vehicle, which type of voltage powers the air conditioner
,compressor?
A no voltage
B low voltage
C medium voltage
D high voltage - correct answer - D
An A/C "V" drive belt is being adjusted. The proper tension can be
determined by using a:
A protractor.
B ruler.
C scale.
D vernier caliper. - correct answer - B
If a vehicle has been run without the proper air filter, which part would
most likely be damaged?
A camshaft
B fuel injector
C piston ring
D plug wire - correct answer - C
If a driver continues to ignore the dash warning message to refill a diesel
vehicle with diesel exhaust fluid (DEF), what will be the end result?
A The engine will lock up.
B The engine will overheat.
, C The tailpipe will overheat.
D The vehicle will be disabled. - correct answer - D
Extremely dirty air filters can cause:
A excessive engine airflow.
B improved fuel economy.
C longer engine life.
D poor engine performance. - correct answer - D
Where would a cabin air filter most likely be found?
A inside the passenger area
B under the hood
C inside the trunk
D under the car - correct answer - A
If a tailpipe has a rusted hole in it, which is the proper procedure to
repair it?
A Clean and weld over the hole.
B Glue a patch over the hole.
C Replace the assembly.
D Wrap the hole with exhaust tape - correct answer - C
AND ANSWERS.
Which system uses a confined gas to cool the passenger area of the
vehicle?
A ASE
B EGR
C HVAC
D PCV - correct answer - C
In a hybrid vehicle, what keeps the high-voltage batteries from
overheating?
A blower motor
B exhaust system
C radiator fan
D turbo - correct answer - A
There is plain water dripping on the passenger's feet in a vehicle, which
is the most likely cause?
A The condenser drain is plugged up.
B The evaporator drain is plugged up.
C The heater core is stopped up.
D The radiator is stopped up. - correct answer - B
,The A/C serpentine drive belt keeps jumping off its pulley whenever the
A/C is turned on. Which is the most likely cause?
A A pulley or bracket is misaligned.
B The belt is made of the wrong material.
C The belt is too small.
D The belt is too old. - correct answer - A
What is the name of the heating part that changes the airflow from the
foot area to the vent area?
A blend door
B bypass door
C compression door
D blower door - correct answer - A
Which air conditioner component is located directly in front of the
radiator on a vehicle?
A compressor
B condenser
C dryer
D evaporator - correct answer - B
On a hybrid vehicle, which type of voltage powers the air conditioner
,compressor?
A no voltage
B low voltage
C medium voltage
D high voltage - correct answer - D
An A/C "V" drive belt is being adjusted. The proper tension can be
determined by using a:
A protractor.
B ruler.
C scale.
D vernier caliper. - correct answer - B
If a vehicle has been run without the proper air filter, which part would
most likely be damaged?
A camshaft
B fuel injector
C piston ring
D plug wire - correct answer - C
If a driver continues to ignore the dash warning message to refill a diesel
vehicle with diesel exhaust fluid (DEF), what will be the end result?
A The engine will lock up.
B The engine will overheat.
, C The tailpipe will overheat.
D The vehicle will be disabled. - correct answer - D
Extremely dirty air filters can cause:
A excessive engine airflow.
B improved fuel economy.
C longer engine life.
D poor engine performance. - correct answer - D
Where would a cabin air filter most likely be found?
A inside the passenger area
B under the hood
C inside the trunk
D under the car - correct answer - A
If a tailpipe has a rusted hole in it, which is the proper procedure to
repair it?
A Clean and weld over the hole.
B Glue a patch over the hole.
C Replace the assembly.
D Wrap the hole with exhaust tape - correct answer - C
