Q. __________ is defined as the geometric mean of the relative rejections and the relative recoveries of two minerals.

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Q. Maximum size reduction in a ball mill is done by the, __________ action.

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Q. increasing the capacity of a screen __________ the screen effectiveness.

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Q. The power number for a stirred tank becomes constant at high Reynolds number. In this limit, the variation of power input with impeller rotational speed (N) is proportional to

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Q. Bond crushing law

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Q. Flow of filtrate through the cake in a plate and frame filter press is best described by the __________ equation.

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Q. Rittinger's number designates the new surface created per unit mechanical energy absorbed by the material being crushed. Larger value of Rittinger's number of a material indicates its

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Q. Capacity (in tons/hr) of jaw/gyratory crusher is equal to (where, L = length of the receiving opening, cm S = greater width of the discharge opening, cm)

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Q. Vacuum is applied in __________ zone, in case of a general type continuous rotary drum vacuum filter.

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Q. Which of the follwoing mechanical conveyors does not come under the division 'scrapers' ?

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Q. Length/diameter ratio of a ball mill is

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Q. Feed size of ≥ 25 cms can be accepted by

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Q. Which is the most suitable conveyor for transportation of sticky material ?

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Q. The most suitable equipment for removing the fine dust particle (< 1 micron dia.) from air below its dew point will be a/an

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Q. Laminar flow region is said to exist during agitation of a liquid in an agitator, when the value of Reynolds number is

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Q. Basic slag is not ground in

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Q. Grindability of a material does not depend upon its

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Q. Shape factor for a cylinder whose length equals its diameter is

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Q. In case of a hammer crusher, the

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Q. Dust laden air can be purified using a

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