The most suitable equipment for removing the fine dust particle (< 1 micron dia.) from air below its dew point will be a/an______________?
A. Bag filter
B. Electrostatic precipitator
C. Cyclone separator
D. Wet scrubber
A. Bag filter
B. Electrostatic precipitator
C. Cyclone separator
D. Wet scrubber
A. Cleaning of coal
B. Concentration of iron ore
C. Concentration of pyrites
D. Water treatment
Chance process is used for the________________? Read More »
Mechanical Operations A. Constant rate
B. Varying pressure
C. Varying rate
D. Constant pressure
A. Reynold’s
B. Froude
C. Both A. & B.
D. Neither A. nor B.
A. Froude number is independent for the curves between power number and Reynolds number in
baffled system
B. Power number becomes independent of impellers Reynolds number at high Reynolds number,
but is dependent on the geometry of the impeller
C. Froude number is used to account for the effect of surface (e.g., the centre vortex) on the
power number
D. All A., B. and C.
During agitation of liquids, the_________________? Read More »
Mechanical Operations A. Jet mills
B. Fluid energy mill
C. Micronizer
D. All A., B. and C.
A. Blending miscible liquids
B. Non-flowing powder and thin pastes
C. Bath mixing
D. Continuous mixing
Ribbon blenders are exclusively meant for __________________? Read More »
Mechanical Operations A. Nc = (1/4π). √(g/R1 – R2)
B. Nc = (1/2π). √(g/R1 – R2)
C. Nc = (1/π). √(g/R1 – R2)
D. Nc = (1/2π). √(R1 – R2/g)
A. 3 to 4
B. 8 to 10
C. 10 to 15
D. 15 to 20
A. Disc bowl centrifuge
B. Sharpies super-centrifuge
C. Batch basket centrifuge
D. Sparkler filter