HAC101 Week 9 Flashcard Climate Control

Front

Transducers are electronic devices that convert:

Back

one form of energy into another.

Front

A sun load sensor is a: thermistor, resistor, photodiode, potentiometer.

Back

photodiode.

Front

Who is correct regarding the sun load sensor: Technician A says it monitors the temperature that passengers feel from the sun's rays, while Technician B says it is a thermistor?

Back

Technician A

Front

A heat sensing resistor that changes its value as its temperature changes is known as a:

Back

Thermistor.

Front

The ________ is located in the airstream where the air leaves the evaporator and signals to the climate control system's ECU the temperature of the air.

Back

Evaporator temperature sensor

Front

The ECU will usually not allow the air-conditioning compressor to turn on if the ambient air temperature is below _____.
Select one: 50°F, 40°F, 45°F, 60°F

Back

40°F

Front

If the evaporator temperature drops too low, the moisture will freeze on the evaporator and block airflow through the fins. Select one:

Back

True

Front

The HVAC ECU system needs to know all of the following EXCEPT: the temperature of the ambient air, the cabin air temperature, whether the vehicle is in bright sunlight, the temperature of the heater core.

Back

the temperature of the heater core.

Front

In the automotive climate control system, the ________ measures the temperature of the outside air.

Back

Ambient air temperature sensor

Front

Which sensor signals to the ECU the temperature of the coolant which flows through the heater core? Options: Ambient air temperature sensor, Cabin air temperature sensor, Engine coolant temperature sensor, Sun load, or solar, sensor

Back

Engine coolant temperature sensor