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MRAC Set-1
Mobile Air Conditioning
10

Mobile Air Conditioning MCQ with Answers

10) Which lubricant oil is used with R-134a car AC system?

Mineral oil

Low viscosity oil

High viscosity oil

Poly alkylene glycol

Answer is:

Poly alkylene glycol

Mobile Air Conditioning MCQ with Answers

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Related Mobile Air Conditioning MCQ with Answers

11) Where the sensor bulb of Thermostatic Expansion Valve is clamped?

Liquid Line

Suction Line

Discharge Line

Inside the compressor

Answer is:

Suction Line

12) Which type of short cycling is avoided by the design of blower housing in car AC?

Oil

Air

Moisture

Lubricant

Answer is:

Air

13) Which operating condition opens the HPC control switch in car AC?

If evaporator pressure exceeds safe limit

If there is continuous rain outside

If condenser pressure exceeds safe limit

If there is continuous air velocity

Answer is:

If condenser pressure exceeds safe limit

14) What is the differential of low pressure cut out control switch? If LPC cuts out at 2.2kg/ cm² and LPC cut in at 2.4kg/ cm²

0.8 kg/ cm²

0.4 kg/ cm²

0.2 kg/ cm²

0.1 kg/ cm²

Answer is:

0.2 kg/ cm²

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