The capacity of a classifier in 'tons of solid/hr' is given by (where, A = cross

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The capacity of a classifier in 'tons of solid/hr' is given by (where, A = cross-sectional area, m² V = rising velocity of fluid, m/sec.S = percentage of solids in the suspension by volume.? = density of solids, kg/m³)
Options
A. 3.6 AVS.?
B. 3.6 A.V.?
C. 3.6 A.S. ?
D. 3.6 AVS/?

Correct Answer

3.6 AVS.?

3. Which of the following can be most effectively used for clarification of lube oil and printing ink?
Options
A. Sparkler filter
B. Precoat filter
C. Disc-bowl centrifuge
D. Sharpies supercentrifuge

5. The basic filtration equation is given as where, V is volume of the filtrate ; A is the filtration area, a is specific cake resistance, ? is viscosity of the filtrate, and C is the concentration of the solids in the feed slurry.
In a 20 minutes constant rate filtration, 5 m³ of filtrate was obtained. If this is followed by a constant pressure filtration, how much more time in minutes, it will take for another 5 m³ of filtrate to be produced? Neglect filter medium resistance, Rm ; assume incompressible cake.
Options
A. 10
B. 20
C. 25
D. 30

9. In the cyclone separator used for separation of dust from dust laden gas, the gas
Options
A. enters the cyclone from the top.
B. is admitted tangentially at high velocity.
C. develops a helical motion inside the chamber.
D. both (b) and (c).

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