For forward inclined vanes, i.e., vanes having exit angle greater than 90°, which of the following curves holds good?a)Curve Ab)Curve Bc)Curve Cd)All options are correctCorrect answer is option 'C'. Can you explain this answer?

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For forward inclined vanes, i.e., vanes having exit angle greater than 90°, which of the following curves holds good?

a)
Curve A
b)
Curve B
c)
Curve C
d)
All options are correct

Correct answer is option 'C'. Can you explain this answer?

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For forward inclined vanes, i.e., vanes having exit angle greater tha...

Radial vanes, Backward vanes, Forward vanes

Backward Curved Blades: vane exit angle is less than 90°

Forward Curved Blades: vane exit angle is more than 90°

Radial Blades: Vane exit angle is 90°

The blades of the compressor or either forward-curved or backward-curved or radial. Back curved blades were used in the older compressors, whereas the modern centrifugal compressors use mostly radial blades.

Pumps are not usually designed with forward curved vanes since such pumps tend to suffer unstable flow conditions.

Backward curved blades are slightly better inefficiency and are stable over a wide range of flow. While forward-curved blades are used for a higher pressure ratio.

Head-capacity and power-capacity curves

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For forward inclined vanes, i.e., vanes having exit angle greater than 90°, which of the following curves holds good?a)Curve Ab)Curve Bc)Curve Cd)All options are correctCorrect answer is option 'C'. Can you explain this answer?

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