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

Related Mcqs:

1. 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 ________________?

   A. Mass
   B. Volume
   C. Specific weight
   D. None of these

2. Bernoulli’s equation is not applicable, when the flow is___________________?

   A. Irrotational
   B. Incompressible
   C. Viscous
   D. All A., B. & C.

3. 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.

4. 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

5. 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

6. 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

7. 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

8. Mass velocity in case of steady flow and through a constant cross-section conduit is independent of the _________________?

   A. Temperature
   B. Pressure
   C. Both A. & B.
   D. Neither A. nor B.

9. Priming of a centrifugal pump is done to___________________?

   A. Increase the mass flow rate of fluid
   B. Develop effective pressure rise by the pump
   C. Avoid chances of separation inside the impeller
   D. None of these

10. Surge tanks are provided in high pressure water pipelines to___________________?

    A. Store a definite quantity of water all the time
    B. Reduce the water hammer
    C. Facilitate easy dismantling of pipeline for cleaning and maintenance
    D. None of these