For a particle settling in water at its terminal settling velocity, which of the following is true ?

Related Mcqs:

1. A particle A of diameter 10 microns settles in an oil of specific gravity 0.9 and viscosity 10 poise under Stoke’s law. A particle B with diameter 20 microns settling in the same oil will have a settling velocity ?

   A. Same as that of A B. One fourth as that of A C. Twice as that of A D. Four times as that of A...

2. Brownian movement is prominent in the particle size range of _____________ microns in case of settling of a particle in a fluid?

   A. 2 to 3 B. 0.01 to 0.10 C. 200 to 300 D. 100 to 1000...

3. The terminal velocity of a small sphere settling in a viscous fluid varies as the___________________?

   A. First power of its diameter B. Inverse of the fluid viscosity C. Inverse square of the diameter D. Square of the difference in specific weights of solid & fluid...

4. In Newton’s law range, the terminal velocity of a solid spherical particle falling through a stationary fluid mass varies as the ______________ of its diameter?

   A. Inverse B. Square root C. Second power D. First power...

5. 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...

6. Drag co-efficient in hindered settling is _____________ that in free settling?

   A. Less than B. Equal to C. Not necessarily greater than D. Always greater than...

7. The terminal velocity of a particle moving through a fluid varies as dp n. The value of n is equal to _______________ in Stoke’s law regime?

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

8. 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....

9. 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...

10. In the Newton’s law range, the terminal velocity of a solid spherical particle falling through a stationary fluid mass is ______________ the fluid viscosity?

    A. Directly proportional to B. Inversely proportional to C. Inversely proportional to the square root of D. Independent of...