Mechanical Operations Vertical transportation of materials can be done by a/an Bucket elevator Pneumatic conveyor Both B & C Apron conveyor Bucket elevator Pneumatic conveyor Both B & C Apron conveyor ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations In case of grinding in a ball mill All of these Wet grinding achieves a finer product size than dry grinding Grinding cost and power requirement increases with increasing fineness of the products Its capacity decreases with increasing fineness of the products All of these Wet grinding achieves a finer product size than dry grinding Grinding cost and power requirement increases with increasing fineness of the products Its capacity decreases with increasing fineness of the products ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Which of the following can be most effectively used for clarification of lube oil and printing ink? Precoat filter Sparkler filter Disc-bowl centrifuge Sharpies supercentrifuge Precoat filter Sparkler filter Disc-bowl centrifuge Sharpies supercentrifuge ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Sphericity is the ratio of the surface area of a spherical particle having the same volume as the particle to the surface area of the particle. Which of the following has the maximum value of sphericity? Sphere Raschig rings Cylinder (L/D = 1) Cube Sphere Raschig rings Cylinder (L/D = 1) Cube 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
Mechanical Operations During size reduction by a jaw crusher, the energy consumed decreases with the None of these Decreasing size of product at constant size of feed Increasing size of feed at constant reduction ratio Decreasing machine capacity None of these Decreasing size of product at constant size of feed Increasing size of feed at constant reduction ratio Decreasing machine capacity ANSWER DOWNLOAD EXAMIANS APP
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