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Mechanical Operations

Mechanical Operations
Cement clinker is reduced to fine size by a

Ball mill
Roll crusher
Tube mill
Hammer mill

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Mechanical Operations
Pine oil and cresylic acid are used as __________ in the froth floatation process.

Depressor
Collector
Frother
Conditioner

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Mechanical Operations
Theoretical capacity of crushing rolls in tons/hr is given by (where, V = peripherial velocity, m/sec. W = width of rolls, m Dr = distance between rolls ρ = density of material to be crushed, kg/m³ here, V =πN.D where, N = speed of the rolls in rotation per second (rps) D = diameter of rolls, m)

3.6 V.W.Dr/ρ
3.6 W.Dr.ρ
3.6 V.W.Dr.ρ
3.6 V.W. ρ

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Mechanical Operations
Filtration of water in a paper mill is done by a/an __________ filter.

Vacuum leaf
Sparkler
Open sand
Plate and frame

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Mechanical Operations
Vacuum filter is most suitable for the

Liquids of very high viscosity
None of these
Removal of fines from liquid
Liquids having high vapour pressure

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Mechanical Operations
The value of 'angle of nip' is generally about

52°
32°
16°
64°

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MORE MCQ ON Mechanical Operations

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