Which of the following statements regarding impulse turbine is correc

1.	Which of the following statements regarding impulse turbine is correct?
A.	Only velocity of flow performs work on the blade
B.	Only velocity of Whirl performs work on the blade
C.	Axial component of velocity is called velocity of whirl
D.	Relative velocity of steam to moving blade at the inlet is always less than the relative velocity at outlet
Answer» C. Axial component of velocity is called velocity of whirl

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