SSC SSC JE Mechanical 2025 Mock Test Series (Paper 1 & Paper 2) Fluid Mechanics Turbomachinery Impulse Turbine
In impulse turbine, the optimum blade speed ratio for maximum efficiency (taking A as the acute nozzle angle measured from the direction of blade velocity) is:
1
cos (A/2)
2
(cos A)/2
3
cos (2A)
4
2 (cos A)