A suspension of glass beads in ethylene glycol has a hindered settling velocity of 1.7 mm/s, while the terminal settling velocity of a single glass bead in ethylene glycol is 17 mm/s. If the Richardson-Zaki hindered settling index is 4.5, the volume fraction of solids in the suspension is

Mechanical Operations
A suspension of glass beads in ethylene glycol has a hindered settling velocity of 1.7 mm/s, while the terminal settling velocity of a single glass bead in ethylene glycol is 17 mm/s. If the Richardson-Zaki hindered settling index is 4.5, the volume fraction of solids in the suspension is

None of these

0.6

0.1

0.4

None of these

0.6

0.1

0.4

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Mechanical Operations
Crushing efficiency is the ratio of the

Energy fed to the machine to the surface energy created by crushing

Energy absorbed by the solid to the surface energy created by crushing

Surface energy created by crushing to the energy absorbed by the solid

Energy absorbed by the solid to that fed to the machine

Energy fed to the machine to the surface energy created by crushing

Energy absorbed by the solid to the surface energy created by crushing

Surface energy created by crushing to the energy absorbed by the solid

Energy absorbed by the solid to that fed to the machine

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Mechanical Operations
Pine oil used in froth floatation technique acts as a/an

Modifier

Activator

Collector

Frother

Modifier

Activator

Collector

Frother

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Mechanical Operations
Handling of ashes and similar materials can be done best by a __________ conveyor.

Flight

Belt

Ribbon

Drag or slat

Flight

Belt

Ribbon

Drag or slat

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Mechanical Operations
The term 'angle of nip' is concerned with the operation of the __________ crushers.

Roll

Gyratory

None of these

Jaw

Roll

Gyratory

None of these

Jaw

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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.

Tailing

Middling

None of these

Concentrate

Tailing

Middling

None of these

Concentrate

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Mechanical Operations

Mechanical Operations Crushing efficiency is the ratio of the

Mechanical Operations Pine oil used in froth floatation technique acts as a/an

Mechanical Operations Handling of ashes and similar materials can be done best by a __________ conveyor.

Mechanical Operations The term 'angle of nip' is concerned with the operation of the __________ crushers.

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.

Mechanical Operations
Crushing efficiency is the ratio of the

Mechanical Operations
Pine oil used in froth floatation technique acts as a/an

Mechanical Operations
Handling of ashes and similar materials can be done best by a __________ conveyor.

Mechanical Operations
The term 'angle of nip' is concerned with the operation of the __________ crushers.

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.