Mechanical Operations Optimum ratio of operating speed to critical speed of a trommel is 1.5-2.5 1.33-1.45 0.5-2 0.33-0.45 1.5-2.5 1.33-1.45 0.5-2 0.33-0.45 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Trommels are revolving screens which normally operate in the range of __________ rpm. 60 - 75 15 - 20 40 - 50 43832 60 - 75 15 - 20 40 - 50 43832 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The reduction ratio for grinders is defined as(where, Df and Dp are average diameters of feed and product respectively). Df - Dp Dp/Df None of these Df/Dp Df - Dp Dp/Df None of these Df/Dp ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Number of particles in a crushed solid sample is given by (where, m = mass of particles in a sample, Vp = volume of one particle, ρ= density of particles) M . ρ/Vp M/ρ . Vp M . Vp/ρ Vp/m . ρ M . ρ/Vp M/ρ . Vp M . Vp/ρ Vp/m . ρ ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Which of the following minerals is not subjected to magnetic separation method? Chromite Siderite Rutile Galena Chromite Siderite Rutile Galena 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 Unblanced fly wheels Cams or eccentric shafts Electromagnets Either A, B or C Unblanced fly wheels Cams or eccentric shafts Electromagnets Either A, B or C ANSWER DOWNLOAD EXAMIANS APP
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