ommon/TakeTutorialAssignment.aspx Materia The Expert TA 1 Hum. W 11-Fluids Begin

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ommon/TakeTutorialAssignment.aspx Materia The Expert TA 1 Hum. W 11-Fluids Begin Date: 8/28/2017 10.00-00 AM-Due Date: 11/12/2017 11 59:00 PM End Date: 12/22/2017 12:00:00 AM (7%) Problem 13: Water flows smoothly through a pipe with various circular cross sections of diameters 2D, 6D, and D, respectively 3 2D 6D Otheexpertta.com 25% Part (a) In which section is the volume flow rate largest? Choose the best answer 25% Part (b) In which section is the speed of the water largest, Choose the best answer. 25% Part (c) what is the ratio of the speed in section 3 to the speed in section 17 25% Part (d) In which sectionisthe pressurelargest?aoose the best answer. deduction per hint Hants renainmgA

Explanation / Answer

a) volume flow rate is same in each section

b) if area of cross section is smallest then speed of the water largest

so among the given section section with diametr D is smallest hence in section 3 of diamter D water speed is largest

c) A3*V3 = A1*V1

V3/V1 = A1/A3 = pi(2D/2)^2 / (pi*(D/2)^2 = D^2/(D^2/4) = 4

d) if the speed of water is slowest then pressure is largest

so in section 3) pressure is largest

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