SSC JE Mechanical Engineering 2018 Set 1 Paper

Question : 189 of 200

Marks: +1, -0

The overall efficiency of a Pelton turbine is 70%.
If the mechanical efficiency is 85%, what is its hydraulic efficiency?

Solution:

Overall efficiency =

η _m

(mechanical efficiency) ×

η _h

(hydraulic efficiency)
0.70 = 0.85 ×

η _\h

η _\h=0.82

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