Mechanical Operations What is the critical rotation speed in revolutions per second, for a ball mill of 1.2 m diameter charged with 70 mm dia balls? 2.76 0.66 0.5 1 2.76 0.66 0.5 1 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The filtrate flow rate in constant pressure filtration Continuously increases May increase or decrease ; depends on the pressure Continuously decreases Remains constant throughout Continuously increases May increase or decrease ; depends on the pressure Continuously decreases Remains constant throughout ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The most suitable equipment used to devulcanise rubber scrap and to make water dispersion & rubber solution is a Propeller agitator Boundary mixer Sharpies centrifuge None of these Propeller agitator Boundary mixer Sharpies centrifuge None of these ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Size reduction of ice and gypsum can be accomplished suitably by a __________ crusher. Gyratory None of these Toothed roll Blake jaw Gyratory None of these Toothed roll Blake jaw ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations A suspension of glass beads in ethylene glycol has a hindered settling velocity of 1.7 mm/s, while the terminal settling velocity of a single glass bead in ethylene glycol is 17 mm/s. If the Richardson-Zaki hindered settling index is 4.5, the volume fraction of solids in the suspension is None of these 0.4 0.6 0.1 None of these 0.4 0.6 0.1 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Sphericity for a non-spherical particle is given by (where, V and S are volume and surface area respectively of one particle. and, D = equivalent diameter of particle). V/6D.S 6.V/D.S V/D.S S/V V/6D.S 6.V/D.S V/D.S S/V ANSWER DOWNLOAD EXAMIANS APP
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