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Study MCQ
Refrigeration and Air Conditioning Technician
COMPRESSOR AND MOTORS
Set 5
Set 5
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Q9866
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Which movement of the scroll compresses the low pressure vapour in scroll compressor?
A
Reciprocating
B
Centrifugal
C
Rotating
D
Orbital
Q9867
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Which capacitor is disconnected by relay in capacitor start and induction run motor?
A
Starting capacitor
B
Running capacitor
C
Boosting capacitor
D
Power factor correction capacitor
Q9868
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What is the formula to find out the synchronous speed of induction motor?
A
Ns=(150P/f)
B
Ns=(120f/P)
C
Ns=(150f/P)
D
Ns=(120P/f)
Q9869
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How to change the direction of rotation in 3 Phase induction motor?
A
Change neutral
B
Change all phase
C
Change any two phase
D
Change the winding only
Q9870
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How the difference between the synchronous speed and the actual rotor speed is specified?
A
Lead
B
Lag
C
Slip
D
Trip
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