16 Questions
What is the purpose of a compressor?
To produce large pressure rise by compressing gas
What is the usual pressure rise produced by a single stage compressor?
Up to 4 bar
What are fans and blowers classified as in the context of compressors?
Low pressure compressors
How is the flow in a compressor stage described?
Decelerating flow as in a diffuser
What are the everyday uses of compressors mentioned in the text?
Refrigeration, air conditioning, and industrial processes
What type of compressors are positive displacement and reciprocating?
They are not classified by pressure
What is the defining characteristic of a rotodynamic compressor?
Acceleration of flow
In a multistage axial flow compressor, what is the defining characteristic of a high reaction stage?
Reverse flow near the blade tip
What is the defining characteristic of stalling in compressors?
Complete breakdown of flow
What is the distinguishing factor between surge and stall in compressors?
Complete breakdown of flow
What is the major consequence of surge in a compressor?
Vibration of the entire machine
In a rotodynamic compressor, what leads to pressure rises?
Acceleration of flow
What is the primary impact of stalling on the stage efficiency of a compressor?
Higher losses due to reverse flow near the blade tip
What characterizes a high reaction stage in an axial flow compressor?
Successive pressure drops and reduction in enthalpy
What leads to surging in compressors?
Reducing the mass flow while maintaining constant rotational speed
What characterizes multistage operation in compressors?
Pressure rises obtained through diffusing passages with a reduction in velocity
Test your knowledge on the basic concepts, classifications, thermodynamics, and characteristics of compressors. Explore topics such as stage velocity triangle, blade loading, compressor efficiencies, and more.
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