Hi guys in this article we discuss the new topic MCQ Questions on Turbulent Flow  (objective questions and answers) it is important point in Fluid Mechanics so let's see

This MCQ Questions are important for any competitive exam and other related exams and better knowledge of this subject.

MCQ Questions on Turbulent Flow (objective questions and answers) 

MCQ Questions on Turbulent Flow  (objective questions and answers)

Q.no.1) The turbulent flow has

a) streak line motion

b) random orientation of fluid mechanics

c) parabolic velocity distribution

d) none of these

                                                                                            Answer : (b)

Q.no.2) Shear velocity is

a) a non-dimensional quantity 

b) velocity of fluid

c)  a convenient fictious quantity

d) both (a) and (b) 

                                                                                           Answer : (c)

Q.no.3) The intensity of turbulence refers to 

a) root mean square of turbulent velocity fluctuations

b) average kinetic energy

c) fluctuating velocity components

d) Reynolds stresses

                                                                                          Answer : (a) 

Q.no.4) The Prandtl mixing length is 

a) a universal constant 

b) zero at the pipe wall 

c) shear stress

d) none of these

                                                                                          Answer : (b)

Q.no.5) Turbulent flow has 

a) streak line motion

b) parabolic velocity distribution 

c) small slope of velocity

d) random orientation of fluid particles

                                                                                         Answer : (d)

Q.no.6) For thermodynamically smooth pipes, the friction factor Ꞙ  

a) constant

b) function of relative roughness 

c) function of Reynolds number

d) both (a) and (b)

                                                                                         Answer : (c) 

  

Q.no.7) The critical value of Reynolds number for transaction for laminar to turbulent boundary layer in external flows taken as

a) 2300

b) 4000

c) 5 × 10⁵ 

d) 3 × 106

                                                                                                                           Answer : (c)

Q.no.8) The logarithmic velocity distribution is observed in

a) open channel flow

b) laminar boundary layer

c) turbulent boundary layer

d) laminar boundary layer over flat plate

                                                                                        Answer : (c)

Q.no.9) Shear stress in turbulent flow is due to 

a) viscous property of the fluid 

b) fluid density

c) fluctuations of velocity in direction of flow

d) fluctuations of velocity in direction of flow as well as transverse 

                                                                                       Answer : (d)

Q.no.10) The hydraulic mean depth for circular pipe diameter ( d ) is

a) d/6 

b) d/4

c) d/2

d) none of these

                                                                                       Answer : (b)   

Q.no.11) Water viscosity v = 1 centistoke flow through 10 mm diameter pipe. Critical flow in pipe would correspond to  discharge is approximately 

a) 0.008 L/s

b) 0.016 L/s 

c) 0.025 L/s

d) 0.032 L/s

                                                                                      Answer : (b)

So in this article we discussed some important MCQ Questions on Turbulent Flow  (objective questions and answers) hope you this questions are helpful for you from exam point view.

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