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? 1 0.5 2.76 0.66 1 0.5 2.76 0.66 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations For spheres, the specific surface shape factor is given by A/V D/V √(AD/V) AD/V A/V D/V √(AD/V) AD/V ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations A widely used size reduction equipment for __________ is Bradford breaker. Wheat Coal Talc Iron core Wheat Coal Talc Iron core ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Washability curve based on float and sink test enables an assessment to be made of the possibility of cleaning a coal fraction based on the Size Differential wettability Volatile matter content Density separation Size Differential wettability Volatile matter content Density separation ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Shape factor for a cylinder whose length equals its diameter is 2.0 0.5 1.0 1.5 2.0 0.5 1.0 1.5 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Production rate __________ with increased fineness, with a given energy input to the size reduction machine. May increase or decrease; depends on the machine Increases Decreases Remains unchanged May increase or decrease; depends on the machine Increases Decreases Remains unchanged ANSWER DOWNLOAD EXAMIANS APP
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