Separators in compressor installations are located

Separators are generally used in air compressor installations

A

Before the inter-cooler

B

After the inter-cooler

C

Between the after-cooler and receiver

D

Before first stage suction

Axial flow compressor has the following advantage over centrifugal compressor

A

Larger air handling ability per unit frontal area

B

Higher pressure ratio per stage

C

Aerofoil blades are used

D

Higher average velocities

In a centrifugal compressor, the flow of air is ________ to the axis of compressor.

A

Parallel

B

Perpendicular

C

Inclined

D

None of these

Which is false statement about advantages of multistage compressor in comparison to single stage compressor?

A

Less power requirement

B

Better mechanical balance

C

Less loss of air due to leakage past the cylinder

D

Lower volumetric efficiency

In an axial flow compressor, the ratio of pressure in the rotor blades to the pressure rise in the compressor in one stage is known as

A

Work factor

B

Slip factor

C

Degree of reaction

D

Pressure coefficient

If the flow of air through the compressor is parallel to its axis, then the compressor is

A

Reciprocating compressor

B

Centrifugal compressor

C

Axial flow compressor

D

Turbo compressor

For very low pressure and high discharge rate, the compressor used is a/an __________ compressor.

A

Axial

B

Reciprocating

C

Rotary

D

None of these

The variable required to be known in correlations used for estimating the horse power of a centrifugal gas compressor and hence its cost are P. Inlet pressure Q. Compressor rpm R. Delivery pressure S. Volumetric flow rate at inlet.

A

P, Q and R

B

P and R

C

R and S

D

P, R and S

What types of installations require a special boot disk?

A

NFS

B

FTP

C

PCMCIA

D

All of the above

E

None of the above

These are special installations of stone or concrete marking the locations of points accurately determined by precise surveying:

A

Topographic marks

B

Hatches

C

Monuments

D

Pillars

Separators in compressor installations are located

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