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Mechanical Operations

Mechanical Operations
The grinding in a hammer crusher takes place due to the

Both A & B
Neither A nor B
Impact
Attrition

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Mechanical Operations
The capacity of a belt conveyor depends upon two factors. If one is the cross-section of the load, the other is the __________ of the belt.

Length
Thickness
None of these
Speed

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Mechanical Operations
The unit of filter medium resistance is

Cm⁻¹
Gm⁻¹
Gm/cm⁻¹
Cm/gm⁻¹

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Mechanical Operations
Energy consumed for crushing one ton of material ranges from __________ kWh.

2 to 3.5
0.5 to 1.5
4 to 5
0.01 to 0.1

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Mechanical Operations
Ultracentrifuges running at speeds upto 100000 rpm is normally used for the

Separation of cream from milk
Separation of isotopes based on their density or molecular weights difference
Dewaxing of lubricating oil
Concentration of rubber latex

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Mechanical Operations
The power number for a stirred tank becomes constant at high Reynolds number. In this limit, the variation of power input with impeller rotational speed (N) is proportional to

N°
N²
N³
N¹

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