Bernoulli’s equation accounts for the_____________________?

Related Mcqs:

1. 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

2. 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

3. 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

4. In a free vortex, the_____________________?

   A. Velocity changes linearly with radial distance
   B. Flow is necessarily rotational
   C. Radial component of velocity is same everywhere
   D. Stream lines are not circular

5. The terminal velocity of a solid spherical particle falling through a stationary fluid mass in the Stoke’s law range is proportional to the_____________________?

   A. Inverse of fluid viscosity
   B. Square of particle size
   C. Difference in the densities of the particle & fluid
   D. All A., B. and C.

6. The most important factor, which determines the maximum height to which water can be lifted by a pump at standard temperature is the_____________________?

   A. Barometric pressure
   B. Speed of the impeller
   C. Diameter of the impeller
   D. Both B. and C.

7. Momentum correction factor used in fluid flow problems accounts for the__________________?

   A. Change in direction of flow
   B. Change in total energy
   C. Change in pressure
   D. Non uniform direction of velocities at inlet & outlet sections

8. Stoke’s equation is valid in the Reynolds number range__________________?

   A. 0.01 to 0.1
   B. 0.1 to 2
   C. 2 to 10
   D. 10 to 100

9. Bernoulli’s equation for steady, frictionless, continuous flow states that the ______________ at all sections is same?

   A. Total pressure
   B. Total energy
   C. Velocity head
   D. None of these

10. Euler’s equation of motion states, that at every point, the_________________?

    A. Fluid momentum is constant
    B. Force per unit mass equals acceleration
    C. Rate of mass outflow is equal to the rate of mass inflow
    D. None of these