Our website is made possible by displaying online advertisements to our visitors. Please consider supporting us by whitelisting our website.

Mechanical Operations

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?

Mechanical Operations /
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

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? Read More »

Mechanical Operations

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?

Mechanical Operations /
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

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? Read More »

Mechanical Operations

____________ conveyor is the most suitable for long distance transportation of cold, nonabrasive granular/irregular shape/fine materials?

Mechanical Operations /
____________ conveyor is the most suitable for long distance transportation of cold, nonabrasive granular/irregular shape/fine materials?

A. Bucket
B. Belt
C. Screw
D. Apron

____________ conveyor is the most suitable for long distance transportation of cold, nonabrasive granular/irregular shape/fine materials? Read More »

Mechanical Operations

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_________________?

Mechanical Operations /
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

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_________________? Read More »

Mechanical Operations