The maximum hydraulic efficiency of an impulse turbine is (where = Angle of blade tip at outlet)

• A. <img src="/_files/images/mechanical-engineering/hydraulic-machines/193-32-1.png">
• B. <img src="/_files/images/mechanical-engineering/hydraulic-machines/193-32-2.png">
• C. <img src="/_files/images/mechanical-engineering/hydraulic-machines/193-32-3.png">
• D. <img src="/_files/images/mechanical-engineering/hydraulic-machines/193-32-4.png">