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 With increase in the capacity of screens, the screen effectiveness Remains unchanged Decreases exponentially Increases Decreases Remains unchanged Decreases exponentially Increases Decreases ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Which of the following is a pressure filter? Sand filter Rotary drum filter Leaf filter (Moore filter) Plate and flame filter Sand filter Rotary drum filter Leaf filter (Moore filter) Plate and flame filter ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations What is the critical rotation speed in revolutions per second, for a ball mill of 1.2 m diameter charged with 70 mm dia balls? 2.76 1 0.66 0.5 2.76 1 0.66 0.5 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The critical speed of a trommel (N) is related to its dia (D) as N ∝ 1/√D N ∝ √D N ∝ D N ∝ 1/D N ∝ 1/√D N ∝ √D N ∝ D N ∝ 1/D ANSWER DOWNLOAD EXAMIANS APP
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