Mechanical Operations For benefication of iron ore, the most commonly used method is Froth floatation None of these Jigging & tabling Flocculation Froth floatation None of these Jigging & tabling Flocculation ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Actual operating speed of a ball mill may vary from 65 to 80% of the critical speed. Which of the following duties would require the ball mill to be operated at maximum percentage of critical speed? Dry grindng of large particles in un-baffed mills Wet grinding in low viscous suspension Dry grinding of large particles (upto 1.25 cms) Wet grinding in high viscous suspension Dry grindng of large particles in un-baffed mills Wet grinding in low viscous suspension Dry grinding of large particles (upto 1.25 cms) Wet grinding in high viscous suspension ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The constants (Kb, Kr and Kk) used in the laws of crushing (i.e., Bond's law, Rittinger's law and Kick's law) depend upon the Type of crushing machine Neither A nor B Both A & B Feed material Type of crushing machine Neither A nor B Both A & B Feed material ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Vibrating screens are used for handling large tonnages of materials. The vibrating motion is imparted to the screening surface by means of Either A, B or C Cams or eccentric shafts Unblanced fly wheels Electromagnets Either A, B or C Cams or eccentric shafts Unblanced fly wheels Electromagnets ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Which one is a filter aid? Calcined lime None of these Diatomaceous earth Convas fabric Calcined lime None of these Diatomaceous earth Convas fabric ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The crushed material received for separation is called feed or Concentrate Middling Tailing Heading Concentrate Middling Tailing Heading ANSWER DOWNLOAD EXAMIANS APP
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