The schedule number of a pipe is an indication of its_________________?

Related Mcqs:

1. I.D. of 1/4″ schedule 40 pipe is 0.364″. I.D. of a 1/2″ schedule 40 pipe would be ______________ inch?

   A. 4.728
   B. 0.5
   C. 0.622
   D. 0.474

2. The pipe wall thickness is minimum for a pipe of given nominal size having schedule number___________________?

   A. 160
   B. 120
   C. 80
   D. 40

3. The pressure drop per unit length of pipe incurred by a fluid ‘X’ flowing through pipe is Δp. If another fluid ‘Y’ having both the specific gravity & density just double of that of fluid ‘X’, flows through the same pipe at the same flow rate/average velocity, then the pressure drop in this case will be__________________?

   A. Δp
   B. 2Δp
   C. Δp2
   D. Δp/2

4. A pipe has a porous section of length L as shown in the figure. Velocity at the start of this section of V0. If fluid leaks into the pipe through the porous section at a volumetric rate per unit area q(x/L)2, what will be axial velocity in the pipe at any „x‟? Assume incompressible one dimensional flow i.e., no gradients in the radial direction ?

   A. VX = V0 + q (x3/L2D)
   B. VX = V0 + ⅓q (x3/L2)
   C. VX = V0 + 2q (x2/LD)
   D. VX = V0 + (4/3) q (x3/L2D)

5. Nominal size of a pipe is an indication of its ______________ diameter?

   A. Inner
   B. Outer
   C. Approximate
   D. None of these

6. Schedule number of a pipe, which is a measure of its wall thickness, is given by ________________?

   A. 1000 P’/S
   B. 100 P’/S
   C. 1000 S/P’
   D. 10000 P’/S

7. For laminar flow of Newtonian fluid in a circular pipe, the velocity distribution is a function of the distance ‘d’ measured from the centre line of the pipe, and it follows a ______________ relationship?

   A. Logarithmic
   B. Parabolic
   C. Hyperbolic
   D. Linear

8. For turbulent fluid flow in pipe, the expression for Prandtl one seventh power law is (where, r = pipe radius, x = distance) ?

   A. V/Vmax = (x/r)1/7
   B. V/Vmax = (r/x)1/7
   C. V/Vmax = (x.r)1/7
   D. None of these

9. The velocity profile exhibited by laminar flow of Newtonian fluids is such that the velocity distribution w.r.t. radius of the circular pipe is a/an ______________ with the apex at the centre line of the pipe?

   A. Hyperbola
   B. Parabola
   C. Semi-circle
   D. Semi-ellipse

10. In case of hydraulically smooth pipe, the resistance to flow depends only on the Reynolds number, whereas for a hydraulically rough pipe, the resistance to flow is governed by the relative roughness. Two pipes are said to have the same hydraulic roughness, when they have equal values of___________________?

    A. Relative roughness
    B. Absolute roughness
    C. Friction co-efficient for flows at equal Reynold number
    D. All A., B. & C.