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Grade: 10

                        

A long straight pipe of circular cross-section has a radius that varies along the length of the pipe. These is a steady flow in the pipe, with no sources or sinks. At one point P 1 in the pipe the radius is r 1 and the mass flux through P 1 is a constant Q1. Further along the pipe is a point P 2 where the radius is r 2 = r 1 /3. (a) The mass flux through P 2 is measured to be Q 2 , where Q 2 /Q 1 is (A) 9. (B) 3. (C) 1. (D) 1/9. (E) dependent on the fluid densities at P 1 and P 2 . (b) The ratio of flow speeds, v 2 /v 1 , is (A) 9. (B) 3. (C) 1. (D) 1/9. (E) dependent on the fluid densities at P 1 and P 2 .

5 years ago

Answers : (1)

Jitender Pal
askIITians Faculty
365 Points
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5 years ago
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  • Test paper with Video Solution
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Previous Year Exam Questions


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