A. Stream line body
B. Two dimensional body
C. Bluff body
D. None of these
Related Mcqs:
- The ratio of wall drag to total drag in the Stoke’s law range is_________________?
A. 0.5
B. 1
C. 1/3
D. 2/3 - The ratio of the wall drag to the form drag in the Stoke’s law range (for motion of spherical particles in a stationary fluid) is__________________?
A. 0.5
B. 1
C. 2
D. 0.33 - For motion of spherical particles in a stationary fluid, the drag co-efficient in hindered settling compared to that in free settling is _______________?
A. More
B. Less
C. Equal
D. More or less, depending on the type of particle - If three pipes of different diameters, lengths & friction factors are connected in parallel, then (where, Q = flow rate, V= fluid velocity f = friction factor). ?
A. Q = Q1 + Q2 + Q3
B. V1 = V2 = V3
C. Q1 = Q2 = Q3
D. f = f1 + f2 + f3 - Fanning friction factor is equal to (where, fB = Blasius friction factor) ?
A. fB/4
B. fB/2
C. 4fB
D. 2fB - If Blasius or Darcy friction factor is ‘f1’ then the Fanning friction factor is equal to____________________?
A. f1/4
B. 4f2
C. 2f1
D. f1/2 - Friction produced by the formation of wakes is called the ______________ friction?
A. Disk
B. Skin
C. Form
D. None of these - Friction factor for a hydraulically smooth pipe at NRe = 2100 is f1. If the pipe is further smoothened (i.e., roughness is reduced), the friction factor at the same value of NRe, will_______________?
A. Increase
B. Decrease
C. Remain unchanged
D. Increase or decrease depending on the pipe material - Drag co-efficient for flow past immersed body is the ratio of _____________ to the product of velocity head and density?
A. Shear stress
B. Shear force
C. Average drag per unit projected area
D. None of these - Drag force acting on a body does not depend upon the____________________?
A. Density of the fluid
B. Density of the body
C. Velocity of the body
D. Projected area of the body
