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? 0.5 2.76 0.66 1 0.5 2.76 0.66 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). S/V V/D.S 6.V/D.S V/6D.S S/V V/D.S 6.V/D.S V/6D.S ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Size reduction of fibrous materials like wood, asbestos, mica etc. is done by a disintegrator exemplified by the Cage mill Stamp mill Bradford's breaker Blake jaw crusher Cage mill Stamp mill Bradford's breaker Blake jaw crusher ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Mesh indicates the number of holes per Linear foot Square inch Linear inch Square foot Linear foot Square inch Linear inch Square foot ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Feed size of ≥ 25 cms can be accepted by Ball mill Rod mill Jaw crusher Fluid energy mill Ball mill Rod mill Jaw crusher Fluid energy mill ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Angle of nip of the crushing rolls does not depend upon the Product size Feed size Diameter of the rolls Speed of the rolls Product size Feed size Diameter of the rolls Speed of the rolls ANSWER DOWNLOAD EXAMIANS APP
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