Air Conditioning System Quiz

_________________________ – allows a difference in pressure between the condenser and evaporator

• Expansion valve
• Evaporator

• Compressor

• Three phase compressor

Which one of the following may need to be performed if the symptoms are: Engine lacks power – Cold air from cabin heater – temperature gauge in the red

• Check Temperature gauge sender unit signal

• Carry out cylinder leakage test

• Carry out a compression test

• Check thermostat opening temperature

The equipment shown is:

• Air conditioning station

• Cooling system pressure tester

• Engine gas analyser

• Emissions tester

Which one of the following components is not driven by a serpentine drive belt?

• Air Conditioning Compressor

• Power Steering Pump

• Oil Pump

• Water Pump

Bubbles present in the receiver/drier sight glass could indicate?

• Gas leakage

• Extreme high pressure

• Correct refrigerant level

• TXV stuck open

Why do we use Sodium filled valve stems in an engine?

• Quieter operation

• Better cooling

• Less value gap needed

• Can use wider value seats

An interior blower motor draws a current of 4 amps on fan speed 2. What is the value of the blower resistor for speed 2?

• 1 ohm

• 2 ohm

• 3 ohm

• 4 ohm

List the four terminal designations (numbers) on a 4-pin relay.

• 30, 85, 86, 87
• 30, 85, 86, 87b

• 84, 30, 85, 86,

• 84, 85, 86, 87

What is the function of the blower resistor?

What piece of equipment can be used to check the effectiveness of an air conditioning evaporator?

• Pressure gauge

• Infer Red temperature gauge

• Thermal expansion gauge

• Vacuum gauge