### MCQs of Part-III Axial Flow Compressors

Showing 1 to 10 out of 23 Questions
1.

The type of rotary compressor used in airplanes is of

 (a) centrifugal type (b) axial flow type (c) radial flow type (d) none of these
2.

Gas turbines use following type of air compressor

 (a) Centrifugal type (b) Reciprocating type (c) Lobe type (d) Axial flow type
3.

The axial flow compressor is preferred in air-craft gas turbines because of

 (a) low frontal area (b) higher thrust (c) high pressure rise (d) none of these
4.

In axial flow compressor, exit flow angle deviation from the blade angle is a function of

 (a) blade camber (b) blade camber and incidence angle (c) space-chord ratio (d) blade camber and space-chord ratio
5.

An axial compressor gives optimum performance at

 (a) high speeds and large volume flows (b) lower speeds and large volume flows (c) high speeds and lower volume flows (d) lower speeds and lower volume flows
6.

In axial flow compressors, the flow of air is ________  to the axis of compressor

 (a) parallel (b) perpendicular (c) inclined (d) all of the mentioned
7.

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
8.

The degree of reaction in an axial flow compressor is defined as the ratio of static enthalpy rise in the

 (a) rotor to static enthalpy rise in the stator (b) stator to static enthalpy rise in the rotor (c) rotor to static enthalpy rise in the stage (d) stator to static enthalpy rise in the stage
9.

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 done factor (b) slip factor (c) degree of reaction (d) pressure coefficient
10.

The mass flow rate of air compressed in axial flow compressor is _____________centrifugal compressor.

 (a) lower than (b) higher than (c) same as (d) unpredictable
Showing 1 to 10 out of 23 Questions