Question:-
Consider the following statements regarding the axial flow in an air compressor :
1. Surging is a local phenomenon while stalling affects the entire compressor.
2. Stalling is a local phenomenon while surging affects the entire compressor.
3. The pressure ratio of an axial compressor stage is smaller than that of a centrifugal compressor stage.
Of these statements
Option (A)
1, 2 and correct
Option (B)
1 and 2 are correct
Option(C)
2 and 3 are correct
Option(D)
1 and 3 are correct
Correct Option:
(C)
Question Solution:
The pressure ratio of an axial compressor per stage is 1.2 : 1 and for centrifugal compressor 4.5: 1
Surging produces noise and vibrations in compressor hence it effect the entire compressor.
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