www.ThinkITI.com

Home
MCQ
Search
Free Apps
Important
Study Groups
Contact Us
Policy

Home
MCQ
Objective Questions
Engineering
Mechanical
ME Set-1
Compressors Gas dynamics and Gas Turbines
69

Compressors Gas dynamics and Gas Turbines MCQ with Answers

69) In a single acting reciprocating air compressor, without clearance, the compression of air may be

isothermal

polytropic

isentropic

any one of these

Answer is:

any one of these

Compressors Gas dynamics and Gas Turbines MCQ with Answers

For more MCQ's Click Here

Related Compressors Gas dynamics and Gas Turbines MCQ with Answers

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

low frontal area

higher thrust

high pressure rise

none of these

Answer is:

low frontal area

71) Which of the following statement is correct as regard to centrifugal compressors?

The flow of air is parallel to the axis of the compressor.

The static pressure of air in the impeller increases in order to provide centripetal force on the air.

The impeller rotates at high speeds.

The maximum efficiency is higher than multi-stage axial flow compressors.

Answer is:

The static pressure of air in the impeller increases in order to provide centripetal force on the air.

72) The ratio of the net work obtained from the gas turbine plant to the turbine work is known as

compression ratio

work ratio

pressure ratio

none of these

Answer is:

work ratio

73) The process, which causes the air to enter the impeller blades of a centrifugal compressor at __________ velocity (without effecting the mass of air to flow and velocity of flow) is known as prewhirl.

reduced

increased

Answer is:

reduced

Compressors Gas dynamics and Gas Turbines MCQ with Answers

For more MCQ's Click Here