13.RRB ALP CBT2 RAC Question bank

RAC

The condenser of a car AC is

• Water cooled
• Air cooled
• Evaporative type
• None of these

The compressor of the car Air conditioning system gets from:

• Solar panels
• Car battery
• Generator of car
• I.C. engine shaft

What is the effect of evacutting the car AC system down to 500 micron level?

• Poor cooling
• TEV orifice blocked by ice
• No moisture problem in system
• LP cut out cycles ‘ON’ and ‘OFF’

Which operation is carried out if thermostat senses the freezing evaporator in car AC?

• Engages heater core
• Disengages heater core
• Engages the magnetic clutch
• Disengages the magnetic clutch

Package A.C. cooling air velocity is measured in the units of ………..

• RPM
• CFM
• kg/cm²
• FPM