A. 5
B. 50
C. 500
D. 5000
Related Mcqs:
- Higher is the mesh number, smaller will be the aperture size of the screen. It means that the aperture size of a 200 mesh screen will be smaller than that of 20 mesh screen. This is valid for__________________?
A. British standard screens
B. German standard screens (DIN 1171) etc
C. American standard screens (ASTM and Tyler standard screens)
D. All A., B. and C. - Pulverised coal passing through 200 mesh screen has a diameter of 0.074 mm (74 micron). The same passing through 50 mesh screen will have a dia of ____________ mm?
A. 0.007
B. 0.30
C. 50
D. 0.014 - A sand mixture was screened through a standard 10-mesh screen. The mass fraction of the oversize material in feed, overflow and underflow were found to be 0.38, 0.79 and 0.22 respectively. The screen effectiveness based on the oversize is_________________?
A. 0.50
B. 0.58
C. 0.68
D. 0.62 - Screen capacity is proportional to (where, S = screen aperture)____________________?
A. S
B. 1/S
C. S2
D. √S - 200 mesh sieve size corresponds to _____________ microns?
A. 24
B. 74
C. 154
D. 200 - Vibrating screens have capacity in the range of ______________ tons/ft2 .mm mesh size?
A. 0.2 to 0.8
B. 5 to 25
C. 50 to 100
D. 100 to 250 - 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 - The ratio of the actual mesh dimension of Taylor series to that of the next smaller screen is_______________?
A. 2
B. √2
C. 1.5
D. √3 - 200 mesh screen means 200 openings per_____________________?
A. cm2
B. cm
C. inch
D. inch2 - With increase in the capacity of screens, the screen effectiveness__________________?
A. Remains unchanged
B. Increases
C. Decreases
D. Decreases exponentially
