Shape factor for a cylinder whose length equals its diameter is_________________?

Related Mcqs:

1. The sphericity of a cylinder of 1 mm diameter and length 3 mm is_________________?

   A. 0.9
   B. 0.78
   C. 0.6
   D. 0.5

2. For spheres, the surface shape factor is given by (where, A = area, V = volume, and D = diameter) ?

   A. π = (A/D2)
   B. π/6 = (V/D3)
   C. AD/V
   D. None of these

3. Sphericity of raschig ring (whose length and diameter are equal) is___________________?

   A. > 1
   B. < 1
   C. 1
   D. 2

4. If dp is the equivalent diameter of a non-spherical particle, Vp its volume and sp its surface area, then its sphericity is φs is defined by________________?

   A. φs = 6 Vp/dpsp
   B. φs = Vp/dpsp
   C. φs = 6 dpSp/Vp
   D. φs = dpSp/Vp

5. For spheres, the specific surface shape factor is given by___________________?

   A. AD/V
   B. D/V
   C. A/V
   D. √(AD/V)

6. For spheres, volume shape factor is given by____________________?

   A. π = (A/D2)
   B. 2π = (2A/D2)
   C. π/6 = (V/D3)
   D. AD/V

7. Height of liquid in agitation tank is normally maintained equal to the tank diameter. However, if the tank is too tall and a large liquid hold up is desired, then two or more impellers mounted on the same shaft may be used. The clearance between the tank bottom and the bottom most impeller should be about (where, D = impeller diameter) ?

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

8. Equivalent diameter of a particle is the diameter of the sphere having the same __________________?

   A. Ratio of surface to volume as the actual volume
   B. Ratio of volume to surface as the particle
   C. Volume as the particle
   D. None of these

9. Sauter mean diameter is the same as the ______________ mean diameter?

   A. Mass
   B. Arithmetic
   C. Volume-surface
   D. Geometric

10. For a sphere falling in the constant drag co-efficient regime, its terminal velocity depends on its diameter D. as_________________?

    A. d
    B. √d
    C. d2
    D. 1/d