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:

Consider the following statements regarding the axial flow in an air c

1.	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:
A.	1, 2 and 3 are correct
B.	1 and 2 are correct
C.	2 and 3 correct
D.	1 and 3 correct
Answer» E.

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