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Rotary pumps are driven by _________

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Rotary pumps are driven by _________

(a) electric motors

(b) batteries

(c) diesel engines

(d) biogas fuel

This 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

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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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