Water flow rate in a pipe of 3.5 metres diameter can be most economically and conveniently measured by a/an ________________?

Related Mcqs:

1. Flow rate of high velocity flue gas discharged through a stack to the atmosphere can be most conveniently measured by a _________________?

   A. Pitot tube B. Manometer C. Rotameter D. None of these...

2. 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...

3. 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)...

4. Open channel liquid flow is most conveniently measured by a__________________?

   A. Hot wire anemometer B. Notch C. Rotameter D. Segmental orifice...

5. What is the shear rate at the pipe wall, in case of laminar flow of Newtonian fluids in a pipe of diameter ‘D’ & length ‘L’ incurring a pressure drop ‘Δp’ with average velocity ‘Vavg’ ?

   A. D Δp/8L B. D Δp/4L C. 8 Vavg/D D. 4 Vavg/D...

6. Very small pressure difference (< 5 mm water column) can be most conveniently measured by a/an _____________ manometer?

   A. U-tube water B. U-tube mercury C. Inclined tube mercury D. Inclined tube water...

7. In a fully turbulent flow (Re > 105) in a pipe of diameter ‘d’, for a constant pressure gradient, the dependence of volumetric flow rate of an incompressible fluid is_______________?

   A. d B. d2 C. d2.5 D. d4...

8. A centrifugal pump has the following specifications: Power = 4 H.P.; Speed = 800 rpm Head = 8 metres Flow = 1000 litres/minutes. If its speed is halved, then the new head will be ______________ metres?

   A. 2 B. 4 C. 8 D. 5.5...

9. 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...

10. For turbulent flow in smooth circular pipe, the velocity distribution is a function of the distance ‘d’ measured from the wall of the pipe and the friction velocity ‘v’, and it follows a _____________ relationship?

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