When the momentum of one fluid is used for moving another fluid, such a device is called a/an______________?

Related Mcqs:

1. 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

2. The boundary layer is that part of a moving fluid, in which the fluid velocity is_________________?

   A. Affected by the fluid flow pressure
   B. Constant
   C. Affected by the presence of a solid boundary
   D. All A., B. and C.

3. 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

4. The rate of change of moment of momentum represents the ______________ by the fluid?

   A. Torque applied
   B. Force exerted
   C. Work done
   D. Power developed

5. The pressure drop per unit length of pipe incurred by a fluid ‘X’ flowing through pipe is Δp. If another fluid ‘Y’ having both the specific gravity & density just double of that of fluid ‘X’, flows through the same pipe at the same flow rate/average velocity, then the pressure drop in this case will be__________________?

   A. Δp
   B. 2Δp
   C. Δp2
   D. Δp/2

6. In which type of fluid flow, the velocity of flow of fluid changes from point to point in the fluid at any instant ?

   A. Rotational
   B. Unsteady
   C. Turbulent
   D. Non-uniform

7. A Bingham fluid of viscosity μ = 10 Pa.s and yield stress, η0 = 10 KPa, is shared between flat parallel plates separated by a distance of 10-3 m. The top plate is moving with a velocity of 1 m/s. The shear stress on the plate is________________?

   A. 10 KPa
   B. 20 KPa
   C. 30 KPa
   D. 40 KPa

8. The terminal velocity of a particle moving through a fluid varies as dp n. What is the value of n’ for Newton’s law regime ?

   A. 0.5
   B. 1
   C. 1.5
   D. 3

9. _____________ forces act on a particle moving through a stationary fluid?

   A. Gravity
   B. Drag
   C. Buoyant
   D. All A., B., & C.

10. A fluid (μ/ρ) = 0.01 cm2/sec is moving at critical flow condition (NRe = 2100) through a pipe of dia 3 cms. Velocity of flow is _______________ cm/sec?

    A. 7
    B. 700
    C. 7000
    D. 630