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Chemical Engineering - Mechanical Operations

Exercise : Mechanical Operations - Section 3
26.
Size reduction does not occur due to compression in case of
rod mills
gyratory crushers
jaw crushers
smooth roll crushers
Answer: Option
Explanation:
No answer description is available. Let's discuss.
27.
According to Taggart's rule for selecting between a gyratory crusher and a jaw crusher; the later should be used, if the hourly tonnage to be crushed divided by the square of the gape expressed in cm is less than
0.00184
0.0184
0.184
1.84
Answer: Option
Explanation:
No answer description is available. Let's discuss.
28.
Which of the following represents the plot of filtrate volume versus time for constant pressure filtration ?
Parabola
Straight line
Hyperbola
Exponential curve
Answer: Option
Explanation:
No answer description is available. Let's discuss.
29.
Driving force in case of filtration by a centrifuge is the
speed of the centrifuge.
centrifugal pressure exerted by the liquid.
narrow diameter of the vessel.
formation of highly porous cake.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
30.
Rod mills employed for grinding
employ a steel shell having L/D ratio of 1.5 to 3.0.
is useful for handling sticky materials.
employ steel rods of 2-12 cms diameter extending over full length of the mill.
all 'a', 'b' & 'c'.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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