18382. The efficiency of reaction turbine is maximum when (where α = Angle made by the absolute velocity (V) at inlet) September 14, 2025 by Admin [A]. Vb = 0.5 V cos α [B]. Vb = V cos α [C]. Vb = 0.5 V2 cos α [D]. Vb = V2 cos α ✅ The correct answer is option B.
