Power required (in watts) to drive a centrifugal pump is (where Hm = Manometric head in metres, w = Specific weight in N/m3, Q = Discharge of the pump in m3/s and _o = Overall efficiency of the pump)

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Hydraulics and Fluid Mechanics in ME

Power required (in watts) to drive a centrifugal pump is (where H_m = Manometric head in metres, w = Specific weight in N/m³, Q = Discharge of the pump in m³/s and $${\eta _{\text{o}}}$$ = Overall efficiency of the pump)

A) $$\frac{{{\text{w}}{{\text{H}}_{\text{m}}}}}{{{\text{Q}} \times {\eta _{\text{o}}}}}$$ B) $$\frac{{{\text{wQ}}{{\text{H}}_{\text{m}}}}}{{{\eta _{\text{o}}}}}$$ C) $$\frac{{{\text{wQ}}}}{{{{\text{H}}_{\text{m}}} \times {\eta _{\text{o}}}}}$$ D) $$\frac{{{\text{wQ}} \times {\eta _{\text{o}}}}}{{{{\text{H}}_{\text{m}}}}}$$

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Correct Answer: Option B

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Power required (in watts) to drive a centrifugal pump is (where...

Power required (in watts) to drive a centrifugal pump is (where Hm = Manometric head in metres, w = Specific weight in N/m3, Q = Discharge of the pump in m3/s and $${\eta _{\text{o}}}$$ = Overall efficiency of the pump)

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Power required (in watts) to drive a centrifugal pump is (where H_m = Manometric head in metres, w = Specific weight in N/m³, Q = Discharge of the pump in m³/s and $${\eta _{\text{o}}}$$ = Overall efficiency of the pump)