Mechanical Operations During washing of filter at the end of constant pressure filtration, the rate of washing equals the rate of filtration When half the filtrate has been obtained At time zero At the end of filtration At the end of filtration, but decreases with time subsequently When half the filtrate has been obtained At time zero At the end of filtration At the end of filtration, but decreases with time subsequently ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations In case of grinding in a ball mill 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 Wet grinding achieves a finer product size than dry grinding All of these Its capacity decreases with increasing fineness of the products ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations In coal washeries, three products namely the valuable product (i.e. clean/washed coal), discarded product (i.e. mineral matter) and an additional concentrated product called __________ is produced. Tailing Concentrate Middling None of these Tailing Concentrate Middling None of these ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The optimum moisture content in solids to be crushed/ground ranges from __________ percent. 3 to 4 8 to 10 10 to 15 15 to 20 3 to 4 8 to 10 10 to 15 15 to 20 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Apron conveyors are used for Heavy loads & long runs None of these Small loads & long runs Heavy loads & short runs Heavy loads & long runs None of these Small loads & long runs Heavy loads & short runs ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The opening of a 200 mesh screen (Taylor series) is 0.0047 cm 0.0074 cm 0.0074 mm 74 mili-microns 0.0047 cm 0.0074 cm 0.0074 mm 74 mili-microns ANSWER DOWNLOAD EXAMIANS APP
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