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Study MCQ
Refrigeration and Air Conditioning Technician
PACKAGE AIR CONDITIONER
Set 4
Set 4
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Q10212
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Which switch is interlocked to become on if the power isolator is off in package AC?
A
Thermostat
B
Blower motor
C
Crankcase heater
D
Compressor starting
Q10213
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Which valve is opened first after installing the package AC for test run?
A
Ball valve
B
Globe valve
C
Service valve
D
Solenoid valve
Q10214
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What is measured by clamp tester during 'Test run' of package AC?
A
Idle pressure
B
Running current
C
Rotation per minute
D
Vacuum holding strength
Q10215
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What is the purpose of TEV in refrigeration cycle of package AC?
A
Condensing gas
B
Throttling refrigerant
C
Flush out dry nitrogen
D
Cooling the evaporator
Q10216
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Which safety control is actuated by excess of heat /current in package AC?
A
Selector switch
B
Over load relay
C
Water flow switch
D
High pressure cut-out
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