Mechanical Operations In closed circuit grinding as compared to open circuit grinding, the Product has lesser size uniformity Operation is economical Specific surface of product is more Production rate at a given limiting size is lower Product has lesser size uniformity Operation is economical Specific surface of product is more Production rate at a given limiting size is lower ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The specific cake resistance for incompressible sludges is (where ΔP = pressure drop over cake) Independent of ΔP ∝ 1/ ΔP ∝ ΔP ∝ √ΔP Independent of ΔP ∝ 1/ ΔP ∝ ΔP ∝ √ΔP ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Sulphuric acid mist is arrested by using a __________ scrubber. Hollow wet Co-current Packed wet Venturi Hollow wet Co-current Packed wet Venturi ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Screen capacity is proportional to (where, S = screen aperture) S 1/S S² √S S 1/S S² √S ANSWER DOWNLOAD EXAMIANS APP
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? Raschig rings Sphere Cube Cylinder (L/D = 1) Raschig rings Sphere Cube Cylinder (L/D = 1) ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations A screen is said to be blinded, when the Undersizes are retained in oversize fraction Screen is plugged with solid particles Screen capacity is abruptly increased Oversizes are present in undersize fraction Undersizes are retained in oversize fraction Screen is plugged with solid particles Screen capacity is abruptly increased Oversizes are present in undersize fraction ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS