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If it takes 5 minutes to fill a 15 litre bucket from a water tap diameter `(2)/(sqrt(pi))` cm then the raynolds number for the flow is (density of water `=10^(3)kg//m^(3)` and viscosity of water `=10^(-3)Pa`.s) close toA. `11,000`B. `550`C. `1100`D. `5500` |
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Answer» Correct Answer - D `(dm)/(dt)=rhoAV` `15/(5xx60)=10^(3)xxpi(1/(sqrt(pi)))^(2)xx10^(-4)V` `V=0.05m//s` `R_(e)=(rhoVD)/(eta)` `=(10^(3)xx0.5xx2/(sqrt(pi))10^(-2))/(10^(-3))` `=5500` |
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