Why can‚Äö√Ñ√∂‚àö√ë‚àö¬•t rotary pumps non-lu – McqOptions

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1.	Why can‚Äö√Ñ√∂‚àö√ë‚àö¬•t rotary pumps non-lubricate water?#
A.	Because it has lesser viscosity
B.	Because it contains abrasive particles
C.	Multistage pumps are difficult to operate
D.	Draft tube is thin
Answer» C. Multistage pumps are difficult to operate

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