Each term of the Bernoulli’s equation written in the form, (p/ρ) + (g/gc). Z + (v2/2gc) = constant, represents the total energy per unit ________________?

Related Mcqs:

1. Fanning equation is given by (ΔP/ρ) = 4f (L/D) (v2/2gc). It is applicable to _____________ region flow?

   A. Transition
   B. Laminar
   C. Turbulent
   D. Both B. and C.

2. 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

3. In frictional fluid flow, the quantity, (P/ρ) + (V2/2gc) + gz/gc) is___________________?

   A. Constant along a streamline
   B. Not constant along a streamline
   C. Increased in the direction of flow
   D. None of these

4. Each term in Bernoulli‟s equation represents the _____________ of the fluid?

   A. Energy per unit mass
   B. Energy per unit weight
   C. Force per unit mass
   D. None of these

5. 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

6. 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

7. 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

8. Kinetic energy of fluid per unit weight represented by the velocity head is given by___________________?

   A. 2v2/gc
   B. v2/2gc
   C. ρv2/gc
   D. ρ.v2/2gc

9. What is the ratio of total kinetic energy of fluid passing per second to the value obtained on the basis of average velocity (for laminar flow through a circular pipe) ?

   A. 0.5
   B. 1
   C. 1.5
   D. 2

10. The energy loss over a length of pipeline according to Darcy-Weisbach equation for pipe flow is _______________ the mean velocity of flow?

    A. Directly proportional to
    B. Directly proportional to square of
    C. Inversely proportional to
    D. Inversely proportional to square of