COMPRESSOR AND MOTORS - Quiz

1) Which cooling medium is used to cool the motor of a hermetic reciprocating compressor in AC?

Discharge vapour Liquid refrigerant Suction vapour Water

2) What is the method of starting a 3 phase slip ring induction motor?

With starting relay Using starting capacitor With running capacitor Adding resistance to rotor winding

3) Which is used to connect the rotor bars in 3phase squirrel cage induction motor?

Screw Welded End ring Nut and bolt

4) What is the use of a starting capacitor in single phase induction motor?

Improve power factor Increase starting torque Decrease starting torque Dis connect starting winding

5) What is the advantage of a hermetically sealed compressor in refrigerator?

Silent operation Easily serviceable Noise is more Cost is high