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Rotary pumps are driven by _________(a) electric motors(b) batteries(c) diesel engines(d) biogas fuelThis question was posed to me during an interview for a job.The question is from Boiler Mounting Accessories in chapter Steam Generators & Accessories of Energy Engineering

Answer»

The correct choice is (a) electric motors

Explanation: Rotary pumps are DRIVEN by electric motors. Water is pumped due to rotary ACTION of the IMPELLER. Rotary pumps are invented by Charles C Barnes. It is a positive DISPLACEMENT pump. The efficiency of these pumps depends on the percentage of slip to the total quantity DISPLACED.



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