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

0.1

0.4

0.6

None of these

0.1

0.4

0.6

None of these

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Mechanical Operations
In case of a hammer crusher,

Reduction ratio can be varied by adjusting the distance from cage to hammers

Crushing takes place by impact breaking

Maximum acceptable feed size is 30 cms

All of these

Reduction ratio can be varied by adjusting the distance from cage to hammers

Crushing takes place by impact breaking

Maximum acceptable feed size is 30 cms

All of these

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Mechanical Operations
Close circuit grinding by a ball mill with air sweeping employs a

Neither A nor B

Classifier

Both A & B

Cyclone separator between mill & classifier

Neither A nor B

Classifier

Both A & B

Cyclone separator between mill & classifier

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Mechanical Operations
Wheat is ground into flour in a

Hammer crusher

Roller crusher

Impact mill

Fluid energy mill

Hammer crusher

Roller crusher

Impact mill

Fluid energy mill

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Mechanical Operations
Introduction of slurry in a plate and frame filter press is done through a plate in each frame. The plate of this filter has a __________ surface.

Plane

Either A or B

Curved

Ribbed

Plane

Either A or B

Curved

Ribbed

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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.

None of these

Middling

Tailing

Concentrate

None of these

Middling

Tailing

Concentrate

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Mechanical Operations

Mechanical Operations In case of a hammer crusher,

Mechanical Operations Close circuit grinding by a ball mill with air sweeping employs a

Mechanical Operations Wheat is ground into flour in a

Mechanical Operations Introduction of slurry in a plate and frame filter press is done through a plate in each frame. The plate of this filter has a __________ surface.

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
In case of a hammer crusher,

Mechanical Operations
Close circuit grinding by a ball mill with air sweeping employs a

Mechanical Operations
Wheat is ground into flour in a

Mechanical Operations
Introduction of slurry in a plate and frame filter press is done through a plate in each frame. The plate of this filter has a __________ surface.

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.