engineering recuitment UKPSC Polytechnic Lecturer Mock Test 2024 Fluid Mechanics Turbomachinery Impulse Turbine
If ‘ϕ’ is the angle of blade tip at outlet, then maximum hydraulic efficiency of an impulse turbine is
1
\(\frac{1+cos \alpha}{2}\)
2
\(\frac{1-cos \alpha}{2}\)
3
\(\frac{1+sin \alpha}{2}\)
4
\(\frac{1-sin \alpha}{2}\)