Mechanical Operations For grinding of cereals, grains, spices, pigments, saw dust, cork etc., the most extensively used size reduction equipment is a Hammer mill Ball mill Crushing rolls Buhrstone mill Hammer mill Ball mill Crushing rolls Buhrstone mill ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Which of the following gives the work required for size reduction of coal to -200 mesh in a ball mill most accurately ? Rittinger's law Kick's law None of these Bond's law Rittinger's law Kick's law None of these Bond's law ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations At low Reynold's number, the power (P) required for agitating a fluid in a stirred tank becomes independent of inertial forces. In this limit, indicate which of the following relations is satisfied: Po = ρ/ρN3 D5 : Power number Re = ρ N D2/μ: Reynold's number N is the impeller rotational speed, and D is the impeller diameter. Po ∝ Re0.0 Po ∝ Re1.0 Po ∝ Re0.5 Po ∝ Re-1.0 Po ∝ Re0.0 Po ∝ Re1.0 Po ∝ Re0.5 Po ∝ Re-1.0 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Jigging is a technique by which different particles can be Separated by particle shape Mixed Separated by particle density Separated by particle size Separated by particle shape Mixed Separated by particle density Separated by particle size ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Cake resistance is Decreased with the time of filtration None of these Important in the beginning of filtration Independent of pressure drop Decreased with the time of filtration None of these Important in the beginning of filtration Independent of pressure drop ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Size reduction of the __________ can be suitably done by ball mills, crushing rolls and rod mills. Asbestos & mica Non-metallic ores Metalliferrous ores Basic slags Asbestos & mica Non-metallic ores Metalliferrous ores Basic slags ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS