M

Mr. Dubey • 53.05K Points
Coach 

Q. Rotary pumps are driven by

(A) electric motors
(B) batteries
(C) diesel engines
(D) biogas fuel
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Explanation by: Mr. Dubey 
 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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