The efficiency of reaction turbine is maximum when (where α = Angle m – McqOptions

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1.	The efficiency of reaction turbine is maximum when (where α = Angle made by the absolute velocity ‘V’ at inlet)
A.	b = 0.5 V cosα
B.	b = V cos α
C.	b = 0.5 V² cosα
D.	b = V² cos α
Answer» C. b = 0.5 V² cosα

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