Mechanical Operations Sphericity is the ratio of the surface area of a spherical particle having the same volume as the particle to the surface area of the particle. Which of the following has the maximum value of sphericity? Sphere Cube Cylinder (L/D = 1) Raschig rings Sphere Cube Cylinder (L/D = 1) Raschig rings ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Use of 'grinding aids' is done in __________ grinding. Dry Intermediate Wet Ultrafine Dry Intermediate Wet Ultrafine ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Sulphuric acid mist is arrested by using a __________ scrubber. Co-current Hollow wet Venturi Packed wet Co-current Hollow wet Venturi Packed wet ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Crushing efficiency is the ratio of the Energy absorbed by the solid to the surface energy created by crushing Energy fed to the machine to the surface energy created by crushing Surface energy created by crushing to the energy absorbed by the solid Energy absorbed by the solid to that fed to the machine Energy absorbed by the solid to the surface energy created by crushing Energy fed to the machine to the surface energy created by crushing Surface energy created by crushing to the energy absorbed by the solid Energy absorbed by the solid to that fed to the machine ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Which of the following is the most suitable filter for separation of abrasive solids suspended in a corrosive liquid? Batch basket centrifuge Vacuum filter Plate and frame filter press Sand bed filter Batch basket centrifuge Vacuum filter Plate and frame filter press Sand bed filter ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations With increase in drum speed, in a rotary drum filter, the filtration rate Increases linearly Increases Is not affected Decreases Increases linearly Increases Is not affected Decreases ANSWER DOWNLOAD EXAMIANS APP
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