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GATE CE 2021: Fluid Mechanics Quiz 8

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Question 1

What is the value of friction factor, if the diameter of pipe is 100 cm and roughness height is 0.25 cm?

Question 2

Which of the following are correctly matched:

  1. Turbulent flow = Moment Integral equation
  2. Laminar flow = Hagen Poiseuille equation

Question 3

In a pipe of diameter 20 cm, a liquid of density 800 kg/m3 is flowing with a discharge of pipe 350 l/sec and friction factor is estimated as 0.0085. If viscosity of liquid is 2.9×10-4 Ns/m2 and assuming pipe is in smooth turbulent flow region then shear velocity will be

Question 4

Which of the following statement is correct:

Question 5

A 50 cm diameter pipe carries water (v = 0.294 × 10–6 m2/s) at an average velocity of 10 m/s . The roughness of pipe surface is 0.8 mm. For fully rough turbulent flow, What is the boundary shear stress.

Question 6

Determine the distance from the pipewall at which local velocity is equal to the average velocity for turbulent flow in pipe
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Aug 7ESE & GATE CE