engineering recuitment NHPC JE & THDC JE 2023 Mock Test Fluid Mechanics Turbomachinery Pumps

Mechanical efficiency of pump is:

1
\(\rm n_m=\frac{p_{mech\ loss}}{p}\)
2
\(\rm n_m=\frac{p-p_{mech\ loss}}{p^2}\)
3
\(\rm n_m=\frac{p+p_{mech\ loss}}{p}\)
4
\(\rm n_m=\frac{p-p_{mech\ loss}}{p}\)
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