COMPRESSOR AND MOTORS - Quiz

1) Which movement of the scroll compresses the low pressure vapour in scroll compressor?

Reciprocating Centrifugal Rotating Orbital

2) Which capacitor is disconnected by relay in capacitor start and induction run motor?

Starting capacitor Running capacitor Boosting capacitor Power factor correction capacitor

3) What is the formula to find out the synchronous speed of induction motor?

Ns=(150P/f) Ns=(120f/P) Ns=(150f/P) Ns=(120P/f)

4) How to change the direction of rotation in 3 Phase induction motor?

Change neutral Change all phase Change any two phase Change the winding only

5) How the difference between the synchronous speed and the actual rotor speed is specified?

Lead Lag Slip Trip