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Mechanical Operations

Mechanical Operations
The distribution given by microscopic analysis of powder is

Volume
Area
Number
Length

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Mechanical Operations
During agitation of liquids, power consumption during laminar flow is not proportional to the

Viscosity of the liquid
Density of the liquid
Cube of impeller diameters
Square of rotational speed

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Mechanical Operations
In case of a hammer crusher, the final product size depends on the

Clearance between hammer & grinding plates
All of these
Feed rate
Rotor speed

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Mechanical Operations
In coal washeries, three products namely the valuable product (i.e. clean/washed coal), discarded product (i.e. mineral matter) and an additional concentrated product called __________ is produced.

Middling
Concentrate
Tailing
None of these

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Mechanical Operations
Which of the following grinding mills has the horizontally arranged rods as the grinding elements thereby delivering more uniform granular products with minimum fines?

Rod mill
Tube mill
Pebble mill
Compartment mill

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Mechanical Operations
Soft & non-abrasive materials can be made into fines by

Compression
Attrition
None of these
Cutting

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