Chemical Engineering MCQs

Page No. 613

increasing the capacity of a screen _______________ the screen effectiveness?


aDecreases


bIncreases


cDoes not effect


dNone of these


View Answer Decreases

The most suitable equipment for the transportation of 200 mesh size particles is a _______________?


aBucket elevator


bPneumatic conveyor


cScrew conveyor


dBelt conveyor


View Answer Pneumatic conveyor

Vacuum is applied in _______________ zone, in case of a general type continuous rotary drum vacuum filter?


aFiltering


bWashing


cDrying


dAll A., B. & C.


View Answer All A., B. & C.

The capacity of a gyratory crusher is ______________ that of a jaw crusher with the same gape, handling the same feed & for the same product size range.?


aSame as


b2.5 times


c5 times


d10 times


View Answer 2.5 times

Optimum ratio of operating speed to critical speed of a trommel is_____________________?


a0.33-0.45


b1.33-1.45


c0.5-2


d1.5-2.5


View Answer 0.33-0.45

Width and speed of a conveyor belt depends upon the ______________ of the material?


aLump size


bBulk density


cBoth A. & B.


dNeither A. nor B.


View Answer Both A. & B.

Soft & non-abrasive materials can be made into fines by________________________?


aAttrition


bCompression


cCutting


dNone of these


View Answer Attrition

Which is a secondary crusher for a hard & tough stone ?


a Jaw crusher


bCone crusher


cImpact crusher


dToothed roll crusher


View Answer Cone crusher

_______________ is defined as the geometric mean of the relative rejections and the relative recoveries of two minerals?


aSeparation efficiency


bSelectivity index


cConcentration ratio


dNone of these


View Answer Selectivity index

Size reduction of moulding powders, waxes, resins & gums are done in a _______________ mill?


aCage


bHammer


cBoth A. & B.


dNeither A. nor B.


View Answer Both A. & B.

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