Mechanical Operations In bag filters, filter fabrics are never made of Polyester fibres Cotton fibres Nylon fibres Metallic wire woven mesh Polyester fibres Cotton fibres Nylon fibres Metallic wire woven mesh 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 Cams or eccentric shafts Either A, B or C Unblanced fly wheels Electromagnets Cams or eccentric shafts Either A, B or C Unblanced fly wheels Electromagnets 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). 6.V/D.S S/V V/D.S V/6D.S 6.V/D.S S/V V/D.S V/6D.S ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations In case of a hammer crusher, Reduction ratio can be varied by adjusting the distance from cage to hammers Crushing takes place by impact breaking All of these Maximum acceptable feed size is 30 cms Reduction ratio can be varied by adjusting the distance from cage to hammers Crushing takes place by impact breaking All of these Maximum acceptable feed size is 30 cms ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations A screen is said to be blinded, when the Oversizes are present in undersize fraction Screen is plugged with solid particles Undersizes are retained in oversize fraction Screen capacity is abruptly increased Oversizes are present in undersize fraction Screen is plugged with solid particles Undersizes are retained in oversize fraction Screen capacity is abruptly increased ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The filtrate flow rate in constant pressure filtration Remains constant throughout May increase or decrease ; depends on the pressure Continuously decreases Continuously increases Remains constant throughout May increase or decrease ; depends on the pressure Continuously decreases Continuously increases ANSWER DOWNLOAD EXAMIANS APP
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