A. 1.5
B. 1
C. √2
D. None of these
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Related Mcqs:
- 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 - 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. - 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 - 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 - 200 mesh screen means 200 openings per_____________________?
A. cm2
B. cm
C. inch
D. inch2 - increasing the capacity of a screen _______________ the screen effectiveness?
A. Decreases
B. Increases
C. Does not effect
D. None of these - 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 - Screen capacity is proportional to (where, S = screen aperture)____________________?
A. S
B. 1/S
C. S2
D. √S - With increase in the capacity of screens, the screen effectiveness__________________?
A. Remains unchanged
B. Increases
C. Decreases
D. Decreases exponentially - For Indian standard (IS) screens, the mesh number is equal to its aperture size expressed to the nearest deca-micron (0.01 mm). Aperture width of IS screen of mesh number 50 will be approximately _____________ microns?
A. 5
B. 50
C. 500
D. 5000
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