Mechanical Operations The speed of a rotary drum vacuum filter may be about __________ rpm. 100 1 500 50 100 1 500 50 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The energy required per unit mass to grind limestone particles of very large size to 100 μm is 12.7 kWh/ton. An estimate (using Bond's law) of the energy to grind the particles from a very large size to 50 μrn is 18 kWh/ton 25.4 kWh/ton 9.0 kWh/ton 6.35 kWh/ton 18 kWh/ton 25.4 kWh/ton 9.0 kWh/ton 6.35 kWh/ton ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Energy consumption in a crusher decreases with increase in the Size of the product (at constant feed size) Size of feed (at constant reduction ratio) All of these Capacity of the crushing machine Size of the product (at constant feed size) Size of feed (at constant reduction ratio) All of these Capacity of the crushing machine ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations In case of grinding in a ball mill Wet grinding achieves a finer product size than dry grinding All of these Its capacity decreases with increasing fineness of the products Grinding cost and power requirement increases with increasing fineness of the products Wet grinding achieves a finer product size than dry grinding All of these Its capacity decreases with increasing fineness of the products Grinding cost and power requirement increases with increasing fineness of the products ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Ball mill is used for Coarse grinding Attrition Crushing Fine grinding Coarse grinding Attrition Crushing Fine grinding ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Rittinger's number designates the new surface created per unit mechanical energy absorbed by the material being crushed. Larger value of Rittinger's number of a material indicates its None of these Poor grindability Easier grindability High power consumption in grinding None of these Poor grindability Easier grindability High power consumption in grinding ANSWER DOWNLOAD EXAMIANS APP
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