Mechanical Operations Energy consumption in a crusher decreases with increase in the Size of feed (at constant reduction ratio) Capacity of the crushing machine All of these Size of the product (at constant feed size) Size of feed (at constant reduction ratio) Capacity of the crushing machine All of these Size of the product (at constant feed size) ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The cake resistance increases steadily with the time of filtration in a plate and frame filter employing constant __________ filtration. Rate Neither A nor B Both A & B Pressure Rate Neither A nor B Both A & B Pressure ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations If radius of a batch basket centrifuge is halved & the r.p.m. is doubled, then the Linear speed of the basket is doubled Centrifugal force is doubled Linear speed of the basket is halved Capacity of centrifuge is increased Linear speed of the basket is doubled Centrifugal force is doubled Linear speed of the basket is halved Capacity of centrifuge is increased ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The capacity of a classifier in 'tons of solid/hr' is given by (where, A = cross-sectional area, m² V = rising velocity of fluid, m/sec.S = percentage of solids in the suspension by volume.ρ = density of solids, kg/m³) 3.6 AVS.ρ 3.6 A.S. ρ 3.6 AVS/ρ 3.6 A.V.ρ 3.6 AVS.ρ 3.6 A.S. ρ 3.6 AVS/ρ 3.6 A.V.ρ ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Height of liquid in agitation tank is normally maintained equal to the tank diameter. However, if the tank is too tall and a large liquid hold up is desired, then two or more impellers mounted on the same shaft may be used. The clearance between the tank bottom and the bottom most impeller should be about (where, D = impeller diameter) 0.5 D D 2 D 1.5 D 0.5 D D 2 D 1.5 D ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Energy requirement (per unit mass of material crushed/ground) is highest for Ball mill Jaw crusher Fluid energy mill Rod mill Ball mill Jaw crusher Fluid energy mill Rod mill ANSWER DOWNLOAD EXAMIANS APP
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