Pick out the Hagen-Poiseuille‟s equation ?

Related Mcqs:

1. For the laminar flow of a fluid in a circular pipe of radius R, the Hagen-Poisseule equation predicts the volumetric flow rate to be proportional to____________________?

   A. R
   B. R2
   C. R4
   D. R0.5

2. The velocity distribution in direction normal to the direction of flow in plane Poiseuille flow is_______________________?

   A. Hyperbolic
   B. Parabolic
   C. Linear
   D. None of these

3. The equation relating friction factor to Reynold number, f-0.5 = 4 loge (NRe/√f)-0.4, is called the _____________ equation?

   A. Nikuradse
   B. Von-Karman
   C. Blasius
   D. Colebrook

4. Colebrook equation for friction factor in turbulent flow is given by, f-0.5 = -4 loge [(ε/D) + (1.26/NRe √F). It reduces to Nikuradse equation for a value of (ϵ/D) equal to __________________?

   A. 0
   B. 1
   C. ∞
   D. 0.5

5. Bernoulli’s equation for fluid flow is derived following certain assumptions. Out of the assumptions listed below, which set of assumptions is used in derivation of Bernoulli’s equation? A. Fluid flow is frictionless & irrotational. B. Fluid flow is steady. C. Fluid flow is uniform & turbulent. D. Fluid is compressible. E. Fluid is incompressible ?

   A. A, C, D
   B. B, D, E
   C. A, B, E
   D. A, D, E

6. Pressure drop in a packed bed for laminar flow is given by the ______________ equation?

   A. Kozeny-Carman
   B. Blake-Plummer
   C. Leva’s
   D. Fanning friction factor

7. The energy equation, E + (p/ρ) + (V2/2g) + gZ = constant (E = internal energy/mass), is applicable to___________________?

   A. Perfect gases only
   B. Isothermal flow of gases
   C. Adiabatic unsteady flow of gases
   D. All compressible fluids

8. Which of the fluid forces are not considered in the Reynold’s equation of flow ?

   A. Viscous forces
   B. Turbulent forces
   C. Pressure forces
   D. Compressibility forces

9. Which of the following assumptions enables the Euler’s equation of motion to be integrated ?

   A. The fluid is incompressible
   B. The fluid is non-viscous
   C. The continuity equation is satisfied
   D. The flow is rotational and incompressible

10. Bernoulli’s equation describes the _______________?

    A. Mechanical energy balance in potential flow
    B. Kinetic energy balance in laminar flow
    C. Mechanical energy balance in turbulent flow
    D. Mechanical energy balance in boundary layer