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.Management Sciences
Category: Mechanical Operations
For sizing of fine materials, the most suitable equipment is a____________________?
0
A. Trommel
B. Grizzly
C. Shaking screen
D. Vibrating screen
The specific surface of spherical particles is proportional to (where, Dp = diameter of particle)?
A. D2
B. Dp
C. 1/Dp
D. 1/D2p
Vacuum is applied in _______________ zone, in case of a general type continuous rotary drum vacuum filter?
A. Filtering
B. Washing
C. Drying
D. All A., B. & C.
To remove dirt from the flowing fluid, we use a ____________________?
A. Coagulant
B. Gravity settler
C. Strains
D. Clarifier
The opening of a 200 mesh screen (Taylor series) is__________________?
A. 0.0074 cm
B. 0.0074 mm
C. 0.0047 cm
D. 74 milli-microns
In screen analysis, the notation +5 mm/-10 mm means particles passing through ____________________?
A. 10 mm screen and retained on 5 mm screen
B. 5 mm screen and retained on 10 mm screen
C. Both 5 mm and 10 mm screens
D. Neither 5 mm nor 10 mm screen
General mechanism of size reduction in intermediate and fine grinder is by __________________?
A. Cutting action
B. Compression
C. Compression and tearing
D. Impact and attrition
Apron conveyors are used for ___________________ ?
A. Heavy loads & short runs
B. Small loads & long runs
C. Heavy loads & long runs
D. None of these
Tube mill compared to ball mill_______________________?
A. Produces finer products
B. Is long in comparison with its diameter
C. Uses smaller balls
D. All A., B. & C.
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