Related Mcqs:

1. Which of the following must be followed by the flow of a fluid (real or ideal)? (I) Newton’s law of viscosity. (II) Newton’s second law of motion. (III) The continuity equation. (IV) Velocity of boundary layer must be zero relative to boundary. (V) Fluid cannot penetrate a boundary?

   A. I, II, III
   B. II, III, V
   C. I, II, V
   D. II, IV, V

2. 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

3. 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

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. What type of motion the fluid element undergoes, when it changes from one position to another position, such that the angle between the two sides changes ?

   A. Rotation
   B. Translation
   C. Linear deformation
   D. Angular deformation

8. The blades of a centrifugal impeller are said to be curved forward, if the ____________ of the motion of impeller blades?

   A. Inlet tip of a blade curves in a direction opposite to that
   B. Outlet tip of a blade curves in a direction opposite to that
   C. Inlet tip of a blade is towards the direction
   D. Outlet tip of a blade is towards the direction

9. A fluid element has a velocity V = -y2. xi + 2yx2 . j. The motion at (x, y) = (1/√2, 1) is_________________?

   A. Rotational and incompressible
   B. Rotational and compressible
   C. Irrotational and compressible
   D. Irrotational and incompressible

10. For motion of spherical particles in a stationary fluid, the drag co-efficient in hindered settling compared to that in free settling is _______________?

    A. More
    B. Less
    C. Equal
    D. More or less, depending on the type of particle