GME Compressor

Compression ratio is the difference between ____

• discharge & suction pressures

• suction & discharge pressures

• suction pressure

• discharge pressure & clearance volume

The _____ volume in a reciprocating air compressor refers to the space that remains in the cylinder when the piston is at its highest point (top dead center, or TDC)

• Cylinder

• Diplacement

• Clearance

• Swept

The volumetric efficiency of a compressor is defined as the ratio of actual volume sucked by the compressor at the inlet to the _____ volume.

• displacement

• sept

• clearance

• swept

What is the advantage of multistage compression?

• Reduced thermal stress

• maintaining LO film is easy

• Reduced compressor size

• All are correct

In ____ type, the piston of different diameter is connected together and there is only connecting rod.

• 2 stroke

• Tandem piston

• 4 stroke

• screw

For better compressor efficiency, P1/P2=

• P2/P3

• P3/P2

• P2 x 2

• P4/P2

When temperature of air decreases, its density ____.

• decreases

• increases

• remains constant

• All are correct