The velocity triangles at the inlet and exit of the rotor of a turbo m – McqOptions

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1.	The velocity triangles at the inlet and exit of the rotor of a turbo machine are shown. V denotes the absolute velocity of the fluid, W denotes the relative velocity of the fluid, and U denotes the blade the velocity. Subscripts 1 and 2 refer to inlet and outlet respectively. If V2 = W1 and V1 = W2, then the degree of reaction is
A.	0
B.	1
C.	0.5
D.	0.25
Answer» D. 0.25

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