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mechanical engineering steam nozzles and turbines
1. The efficiency of reaction turbine is maximum when (where α = Angle made by the absolute velocity (V) at inlet)
(A): Vb = 0.5 V cos α
(B): Vb = 0.5 V2 cos α
(C): Vb = V cos α
(D): Vb = V2 cos α
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