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? 0.5 1 0.66 2.76 0.5 1 0.66 2.76 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Compressibility co-efficient for an absolutely compressible cake is 0 to 1 ∞ 1 0 to 1 ∞ 1 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations In a size reduction crushing operation, the feed size is 10 to 50 mm, while the product size is 2 to 10 mm. This is a case of __________ crushing. Ultrafine Secondary Primary Fine Ultrafine Secondary Primary Fine ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations In a ball mill, the volume occupied by the balls (when the mill is stopped) is about __________ percent of the volume of the mill. 70 85 35 50 70 85 35 50 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The critical speed of a trommel (N) is related to its dia (D) as N ∝ D N ∝ √D N ∝ 1/√D N ∝ 1/D N ∝ D N ∝ √D N ∝ 1/√D N ∝ 1/D ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations For a sphere falling in the constant drag co-efficient regime, its terminal velocity depends on its diameter (d) as D 1/d D² √d D 1/d D² √d ANSWER DOWNLOAD EXAMIANS APP
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