Related Questions

Sphericity is the ratio of the surface area of a spherical particle having the same volume as the particle to the surface area of the particle. Which of the following has the maximum value of sphericity?
A Sphere
B Cube
C Cylinder (L/D = 1)
D Raschig rings
Sphericity of a cubical particle, when its equivalent diameter is taken as the height of the cube, is
A 0.5
B 1
C $$\sqrt 2 $$
D $$\sqrt 3 $$
3/4th of square were taken to form shape A and the rest was made to form shape B. Shape A was divided into four equal squares (Shape C), what will be the ratio of the one shape C to one shape B.
A 1:4
B 3:16
C 1:2
D 3:4
For a non-spherical particle, the sphericity
A Is defined as the ratio of surface area of a sphere having the same volume as the particle to the actual surface area of the particle
B Has the dimension of length
C Is always less than 1
D Is the ratio of volume of a sphere having the same surface area as the particle to the actual volume of the particle
Sphericity of raschig ring (whose length and diameter are equal) is
A >1
B 1
C 2
Reciprocal of sphericity is termed as the
A Specific surface ratio
B Shape factor
C Sauter diameter
D Surface area per unit mass
Sphericity of pulverised coal is
A 1
B >1
C ∞
For raschig rings, the sphericity is
A 0.5
B 1
C $$\sqrt 3 $$
a box is made in the form of a cube. IF a second cubical box has inside first box , how many times as much does the second box contain ?
A 6
B 9
C 12
D 27
A box is made in the form of a cube. If a second cubical ox has inside dimensions three times those of the first box, how many times as much does the second box contain?
A 6
B 9
C 12
D 27

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