Which one of the following types of impeller vanes are most commonly used in centrifugal type compressors?

Which one of the following types of impeller vanes are most commonly u

1.	Which one of the following types of impeller vanes are most commonly used in centrifugal type compressors?
A.	Forward curved
B.	Radial
C.	Backward curved
D.	Tangential
Answer» D. Tangential

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Which one of the following types of impeller vanes are most commonly used in centrifugal type compressors?

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