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Test: Turbulent Flow - 2 - Mechanical Engineering MCQ


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9 Questions MCQ Test Fluid Mechanics for Mechanical Engineering - Test: Turbulent Flow - 2

Test: Turbulent Flow - 2 for Mechanical Engineering 2024 is part of Fluid Mechanics for Mechanical Engineering preparation. The Test: Turbulent Flow - 2 questions and answers have been prepared according to the Mechanical Engineering exam syllabus.The Test: Turbulent Flow - 2 MCQs are made for Mechanical Engineering 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Turbulent Flow - 2 below.
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Test: Turbulent Flow - 2 - Question 1

In a turbulent flow in a pipe, the shear stress is

Detailed Solution for Test: Turbulent Flow - 2 - Question 1

 shear stress variation where y is distance from pipe wall, so, the shear stress varies linearly with the distance from the boundary to become zero at the center.

Test: Turbulent Flow - 2 - Question 2

Water of kinematic viscosity v = 1 centistoke flows through a 10 mm diameter pipe. The critical flow in this pipe would correspond to a discharge of approximately

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Test: Turbulent Flow - 2 - Question 3

Shear velocity is

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Test: Turbulent Flow - 2 - Question 4

Friction factor f in laminar and turbulent flow in a pipe varies as Re-1 and Re-0.25 respectively. If V\s the average velocity, the pressure drop in a horizontal pipe for laminar and turbulent flow respectively will be proportional to 

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Test: Turbulent Flow - 2 - Question 5

For hydrodynamically smooth pipes, the friction factor f

Test: Turbulent Flow - 2 - Question 6

The critical value of reynolds number for transition from laminar to turbulent boundary layer in external flows is taken as

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Critical Reynolds number for external flow 
(Re)Cr = 5 x 105

Test: Turbulent Flow - 2 - Question 7

The logarithmic velocity distributions observed in

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Logarithmic profile exist is in turbulent flow.

Test: Turbulent Flow - 2 - Question 8

In a fully turbulent flow through a rough pipe, the friction factor ‘f’ is (Re is Reynolds number and ξs/D is relative roughness)

Test: Turbulent Flow - 2 - Question 9

Using the Prandtl's mixing length concept, how is the turbulent shear stress expressed?

Detailed Solution for Test: Turbulent Flow - 2 - Question 9

Turbulent shear stress 

(Smarter way to solve this kind of question is to check for units)

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