Project ForgeFluid Mechanics
Bernoulli's Equation
GATE 2020
Medium
Water is pumped at 0.02 m³/s from Tank I to Tank II, 5m higher, both open to atmosphere, with negligible surface velocities. Total frictional head loss is 1.0m of water (ρ=1000 kg/m³, g=9.81 m/s², pump efficiency 100%). The power supplied by the pump (W) is (round off to 1 decimal place)
1177.2 W(± 3 accepted)
Explanation
Total head required = elevation change + friction loss = 5+1=6m. Power=ρgQH=1000×9.81×0.02×6=1177.2 W.
Source: GATE CH 2020 (2020)
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