A. 0.0074 cm
B. 0.0074 mm
C. 0.0047 cm
D. 74 milli-microns
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 - 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 - The ratio of the area of openings in one screen (Taylor series) to that of the openings in the next smaller screen is_________________?
A. 1.5
B. 1
C. √2
D. None of these - 200 mesh screen means 200 openings per_____________________?
A. cm2
B. cm
C. inch
D. inch2 - 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 - 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 - The most suitable equipment for the transportation of 200 mesh size particles is a _______________?
A. Bucket elevator
B. Pneumatic conveyor
C. Screw conveyor
D. Belt conveyor - 200 mesh sieve size corresponds to _____________ microns?
A. 24
B. 74
C. 154
D. 200 - Which of the following gives the work required for size reduction of coal to -200 mesh in a ball mill most accurately?
A. Rittinger’s law
B. Kick’s law
C. Bond’s law
D. None of these
