AIR CONDITIONING SYSTEM - Quiz

1) What is the boiling point of refrigerant R-134a?

20.5 Degree Centigrade 22.0 Degree Centigrade 26.5 Degree Centigrade 27.8 Degree Centigrade

2) What should be the high air flow rate permitted while doing performance checking in automobile AC system?

4 kg per min 6 kg per min 8 kg per min 10 kg per min

3) Which is not the part of servo motor assembly?

Gear reduction unit Normal DC motor Position sensor Expansion valve

4) How much DC supply voltage required for servo motor?

4 V to 8 V 4.8 V to 6 V 3.5 V to 8 V 5V to 7.5 V

5) Which wire of servo motor connected to power supply?

White Yellow Black Red