Question
Download Solution PDFIf the mechanical efficiency and manometric efficiency of a centrifugal pump are 68.00% and 74.00% respectively, then the overall efficiency of the pump will be:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
The following are the important efficiencies of a centrifugal pump:
1) Manometric Efficiency (ηman): It is the ratio of the manometric head to head imparted by the impeller to the water.
2) Mechanical Efficiency (ηm): It is the ratio of the power available at the impeller to the power at the shaft of the centrifugal pump.
3) Overall Efficiency (ηo): It is defined as a ratio of the power output of the pump to the power input to the pump.
ηo = ηman × ηm
Calculation:
Given:
ηman = 0.74, ηm = 0.68
ηo = ηman × ηm = 0.74 × 0.68 = 0.5032
The overall efficiency of the pump is 50.32%.
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