railway RRB JE (CBT I + CBT II) Mock Test 2024 Power Engineering Air and Gas Compressors Rotary Compressors
Select the incorrect statement with regard to rotary compressors.
1
They have more vibration and pulsation in the flow than piston-cylinder compressors
2
They can be lobe compressors
3
They can be centrifugal compressors
4
They operate at a higher speed than piston-cylinder compressors and are used when large flow rates are needed