Question

A centrifugal pump delivers a manometric head of 12 m when pumping a liquid of relative density 0.8. If all other factors remain the same but the liquid has a relative density of 1.2, the new manometric head would be :

• A. 8 m
• B. 10 m
• C. 12 m
• D. 18 m

Answer 1

The correct option is A 8 m

$P=\rho Qgh\therefore 800Qg\left(12\right)=1200Qg\left(h\right)\Rightarrow h=8m$