Mechanical Operations __________ centrifuge is the most suitable for separation of non-friable crystals. Perforated horizontal basket continuous Suspended batch basket Tubular bowl Disc-bowl Perforated horizontal basket continuous Suspended batch basket Tubular bowl Disc-bowl ANSWER DOWNLOAD EXAMIANS APP
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 1 0.5 0.66 2.76 1 0.5 0.66 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Pick out the wrong statement pertaining to the roll crushers. Reduction ratio and differential roll speed affect production rate & energy consumed per unit of surface produced Both the rolls run necessarily at the same speed For hard material's crushing, the reduction ratio should not exceed 4 Maximum feed size determines the required roll diameter Reduction ratio and differential roll speed affect production rate & energy consumed per unit of surface produced Both the rolls run necessarily at the same speed For hard material's crushing, the reduction ratio should not exceed 4 Maximum feed size determines the required roll diameter ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Energy consumption in a crusher decreases with increase in the Capacity of the crushing machine Size of feed (at constant reduction ratio) All of these Size of the product (at constant feed size) Capacity of the crushing machine Size of feed (at constant reduction ratio) All of these Size of the product (at constant feed size) 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 V/6D.S 6.V/D.S S/V V/D.S V/6D.S 6.V/D.S ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations During agitation of liquids, power consumption during laminar flow is not proportional to the Square of rotational speed Cube of impeller diameters Density of the liquid Viscosity of the liquid Square of rotational speed Cube of impeller diameters Density of the liquid Viscosity of the liquid ANSWER DOWNLOAD EXAMIANS APP
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