यदि और क्रमशः गतिमान और स्थिर ब्लेड के एन्थैल्पी पात है, तो प्रतिक्रिया की डिग्री को ________के रुप में परिभाषित किया जाता है।

Question

Question

This question was previously asked in

BPSC AE Paper 5 (Mechanical) 25th March 2022 Official Paper

Answer 1

Explanation:

Axial flow compressors usually consist of a series of stages
Each stage comprises of a row of rotor blades followed by a row of stator blades
The working fluid is initially accelerated by the rotor blades and then decelerated in the stator passages
In the stator, the kinetic energy transferred in the rotor is converted to static pressure
This process is repeated in several stages to yield the necessary overall pressure ratio
Degree of reaction provides a measure of the extent to which the rotor contributes to the overall pressure rise in the stage
For all types of axial flow compressors, the degree of reaction is usually 0.5.