Deck 26: Heating and Air Conditioning

Question 1

The acronym HVAC is used for the heating, ........, and air conditioning system.

Answer 1

ventilation

Question 2

A vehicle has very little airflow coming from the vents with the fan set on high speed. Technician A says the cabin air filter may be plugged.Technician B says the blower motor resistor may be faulty.Who is correct?

A)Technician A
B)Technician B
C)Both A and B
D)Neither A nor B

Answer 2

A

Question 3

Which of the following is not a type of cooling fan used on cars and light trucks?

A)Belt drive
B)Direct drive
C)Hydraulic
D)Electric

Answer 3

B

Question 4

A car's engine overheats within minutes of starting.Technician A says the thermostat may be stuck open.Technician B says the thermostat may be stuck closed.Who is correct?

A)Technician A
B)Technician B
C)Both A and B
D)Neither A nor B

Question 5

An engine overheats when driving in traffic but not when driven on the highway.Which of the following is the most likely cause?

A)Defective water pump
B)Air trapped in the system
C)Radiator fan not working
D)None of the above

Question 6

The component that allows pressure to increase in the cooling system is the .........

Question 7

A stuck open ........can cause poor heater performance.

Question 8

The ........door controls the temperature of the air in the ventilation system.

Question 9

Technician A says all long-life coolants are similar and can be used interchangeably. Technician B says traditional green coolant can be mixed with long-life coolants.Who is correct?

A)Technician A
B)Technician B
C)Both A and B
D)Neither A nor B

Question 10

The ........core is located in the passenger compartment and has refrigerant flowing through it to absorb heat and cool the interior.