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Mechanical Operations

Mechanical Operations
For classification of potable (drinking) water, we use a __________ filter.

Gravity sand
Plate and frame
Vacuum leaf
Rotary vacuum

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Mechanical Operations
Which of the following crushers can be considered as a combination of a jaw crusher and a roller crusher?

Fluid energy mill
Gyratory crusher
Ball mill
Rod mill

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Mechanical Operations
In classification, particles are said to be equal settling, if they have the same terminal velocities in the

Both B and C
Same fluid
Different fluids
Same field of force

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Mechanical Operations
Pebble mills are tumbling mills widely used for grinding in the manufacture of paints & pigments and cosmetic industries, where iron contamination in the product is highly objectionable. Pebbles used in pebble mill are made of

Stainless steel
Concrete
Bronze
Flint or porcelain

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Mechanical Operations
The distribution given by microscopic analysis of powder is

Number
Volume
Length
Area

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Mechanical Operations
Filter medium resistance is that offered by the

Filter cloth
Filter cloth and the embedded particle collectively
None of these
Embedded particles in the septum

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