The efficiency of an impulse turbine is maximum when (where Vb = Blade – McqOptions

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1.	The efficiency of an impulse turbine is maximum when (where Vb = Blade speed, V = Absolute velocity of steam entering the blade, and ≈í¬± = Nozzle angle)%!
A.	Vb = 0.5 V cos≈í¬±
B.	Vb = V cos≈í¬±
C.	Vb = 0.5 V¬¨‚â§ cos≈í¬±
D.	Vb = V¬¨‚â§ cos≈í¬±
Answer» B. Vb = V cos≈í¬±

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