Mechanical Operations In a size reduction crushing operation, feed size is 300 to 1500 mm while the product size is 100 to 300 mm. This is a case of the __________ crushing. Secondary Fine Ultrafine Primary Secondary Fine Ultrafine Primary ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Energy consumption in a crusher decreases with increase in the 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) Capacity of the crushing machine Size of feed (at constant reduction ratio) ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Production rate __________ with increased fineness, with a given energy input to the size reduction machine. Increases Decreases Remains unchanged May increase or decrease; depends on the machine Increases Decreases Remains unchanged May increase or decrease; depends on the machine ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations To get ultrafine particles, the equipment used is a Fluid energy mill Rod mill Ball mill Hammer crusher Fluid energy mill Rod mill Ball mill Hammer crusher ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations During the washing of cake All the resistances are constant Filter medium resistance increases Filter medium resistance decreases Cake resistance decreases All the resistances are constant Filter medium resistance increases Filter medium resistance decreases Cake resistance decreases ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations What is the selectivity index, if the grade of tailings & concentrate is the same? 0.5 1 ∞ 0.5 1 ∞ ANSWER DOWNLOAD EXAMIANS APP
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