The efficiency of an impulse turbine is maximum when (where Vb = Blade speed, V = Absolute velocity of steam entering the blade and α = Nozzle angle)
A. Vb = 0.5 V cosα
B. Vb = V cosα
C. Vb = 0.5 V2cosα
D. Vb = V2cosα
Answer: Option A
This Question Belongs to Mechanical Engineering >> Steam Boilers, Engines, Nozzles And Turbines
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