Q. A 30% (by volume) suspension of spherical sand particles in a viscous oil has a hindered settling velocity of 4.44 μm/s. If the Richardson Zaki hindered settling index is 4.5, then the terminal velocity of a sand grain is

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Q. Screen efficiency is

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Q. For grinding of cereals, grains, spices, pigments, saw dust, cork etc., the most extensively used size reduction equipment is a

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Q. Handling of ashes and similar materials can be done best by a __________ conveyor.

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Q. Which of the following must be stored in silos and not in open yard ?

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Q. Apron conveyors are used for

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Q. Mixing of plastic solids is generally facilitated by

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Q. The mechanism of size reduction by a hammer mill is by impact and attrition between the

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Q. Which of the following is not an industrial screening equipment ?

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Q. Which of the following is not a wet classifier ?

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Q. Helical screw agitator is used for

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Q. A cottrel precipitator makes use of the __________ for dusty air cleaning.

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Q. If radius of a batch basket centrifuge is halved & the r.p.m. is doubled, then the

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Q. The ratio of the area of openings in one screen (Taylor series) to that of the openings in the next smaller screen is

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Q. Compressibility co-efficient for an absolutely compressible cake is

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Q. __________ baffles are provided in ball mills.

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Q. Mixer used for rubber compounding is

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Q. For spheres, the specific surface shape factor is given by

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Q. __________ mill is not used for grinding wheat into flour and for milling of cereals & other vegetable products.

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Q. In case of a hammer crusher, the final product size depends on the

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