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Mechanical Operations

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

Drying
Filtering
All of these
Washing

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Mechanical Operations
Shape factor for a cylinder whose length equals its diameter is

2.0
1.5
0.5
1.0

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Mechanical Operations
The capacity of a pneumatic conveying system depends upon the

All of these
Pressure of the conveying air
Diameter of the conveying line
Bulk density of materials

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Mechanical Operations
Pulverised coal passing through 200 mesh screen has a diameter of 0.074 mm (74 micron). The same passing through 50 mesh screen will have a dia of __________ mm.

0.3
0.014
50
0.007

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Mechanical Operations
The unit of filter medium resistance is

Cm⁻¹
Cm/gm⁻¹
Gm/cm⁻¹
Gm⁻¹

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Mechanical Operations
Mass flow of granular solid (M) through a circular opening of dia, D follows

M ∝ D²
M ∝ D
M ∝ D³
M ∝ √D

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