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Study MCQ
Refrigeration and Air Conditioning Technician
COMPRESSOR AND MOTORS
Set 4
Set 4
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Q9861
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Which cooling medium is used to cool the motor of a hermetic reciprocating compressor in AC?
A
Discharge vapour
B
Liquid refrigerant
C
Suction vapour
D
Water
Q9862
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What is the method of starting a 3 phase slip ring induction motor?
A
With starting relay
B
Using starting capacitor
C
With running capacitor
D
Adding resistance to rotor winding
Q9863
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Which is used to connect the rotor bars in 3phase squirrel cage induction motor?
A
Screw
B
Welded
C
End ring
D
Nut and bolt
Q9864
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What is the use of a starting capacitor in single phase induction motor?
A
Improve power factor
B
Increase starting torque
C
Decrease starting torque
D
Dis connect starting winding
Q9865
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What is the advantage of a hermetically sealed compressor in refrigerator?
A
Silent operation
B
Easily serviceable
C
Noise is more
D
Cost is high
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