SSC JE Mechanical Engineering 11 Oct 2020 Shift 1 Papers

Question : 168 of 200

Marks: +1, -0

If mechanical efficiency of a Pelton Turbine is 80% and its hydraulic efficiency is 85%, its overall efficiency will be:

Solution:

hydraulic efficiency = 85% and mechanical efficiency = 80%

η_o = η_v × η_h × η_m

η_o = 0.80 × 0.85 = 0.68 = 68%

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