Mechanical Operations Range of compressibility co-efficient of the commercial compressible cake obtained in filtration operation is 0.2 to 0.4 0.2 to 0.8 0.1 to 0.3 0.01 to 0.1 0.2 to 0.4 0.2 to 0.8 0.1 to 0.3 0.01 to 0.1 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations A tube mill as compared to a ball mill Gives finer size reduction but consumes more power All of these Employs smaller balls Has larger length/diameter ratio (>2 as compared to 1 for ball mill) Gives finer size reduction but consumes more power All of these Employs smaller balls Has larger length/diameter ratio (>2 as compared to 1 for ball mill) ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations With increase in the capacity of screens, the screen effectiveness Decreases exponentially Decreases Remains unchanged Increases Decreases exponentially Decreases Remains unchanged Increases ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations What is the selectivity index, if the grade of tailings & concentrate is the same? 1 ∞ 0.5 1 ∞ 0.5 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations For a non-spherical particle, the sphericity Is always less than 1 Is the ratio of volume of a sphere having the same surface area as the particle to the actual volume of the particle Has the dimension of length Is defined as the ratio of surface area of a sphere having the same volume as the particle to the actual surface area of the particle Is always less than 1 Is the ratio of volume of a sphere having the same surface area as the particle to the actual volume of the particle Has the dimension of length Is defined as the ratio of surface area of a sphere having the same volume as the particle to the actual surface area of the particle 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? Sand bed filter Vacuum filter Plate and frame filter press Batch basket centrifuge Sand bed filter Vacuum filter Plate and frame filter press Batch basket centrifuge ANSWER DOWNLOAD EXAMIANS APP