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The efficiency of an impulse turbine is maximum when (where Vb...

This question belongs to Mechanical Engineering Steam Boilers, Engines, Nozzles And Turbines
Steam Boilers, Engines, Nozzles and Turbines
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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)

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Correct Answer: Option A
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