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Month: February 2019

_____________ are mixed using ribbon blenders ?

August 23, 2021February 18, 2019 by admin
_____________ are mixed using ribbon blenders ?

A. Lumpy solids and low viscosity liquids
B. Dry powders
C. High viscosity liquids
D. Thick pastes

Categories Mechanical Operations

Reduction ratio of crushers is the___________________?

August 23, 2021February 18, 2019 by admin
Reduction ratio of crushers is the___________________?

A. Ratio of feed opening to discharge opening
B. Ratio of discharge opening to feed opening
C. Determining factor for minimum dia of the feed and the product
D. None of these

Categories Mechanical Operations

Which of the following is not a revolving/tumbling mill used for size reduction ?

August 23, 2021February 18, 2019 by admin
Which of the following is not a revolving/tumbling mill used for size reduction ?

A. Compartment mill
B. Pebble mill
C. Cage mill
D. Rod mill

Categories Mechanical Operations

Tank filter (e.g., Nutsche filter) is___________________?

August 23, 2021February 18, 2019 by admin
Tank filter (e.g., Nutsche filter) is___________________?

A. A high pressure filter
B. A continuous filter
C. Used for small scale filtration work
D. A leaf filter

Categories Mechanical Operations

The process opposite to ‘dispersion’ is termed as the___________________?

August 23, 2021February 18, 2019 by admin
The process opposite to ‘dispersion’ is termed as the___________________?

A. Flocculation
B. Sedimentation
C. Filtration
D. None of these

Categories Mechanical Operations

Screen capacity is proportional to (where, S = screen aperture)____________________?

August 23, 2021February 18, 2019 by admin
Screen capacity is proportional to (where, S = screen aperture)____________________?

A. S
B. 1/S
C. S2
D. √S

Categories Mechanical Operations

Screen capacity is not a function of__________________?

August 23, 2021February 18, 2019 by admin
Screen capacity is not a function of__________________?

A. Its openings size
B. Screening mechanism
C. Screening surface
D. Atmospheric humidity

Categories Mechanical Operations

Limestone is normally crushed in a _____________________?

August 23, 2021February 18, 2019 by admin
Limestone is normally crushed in a _____________________?

A. Roll crusher
B. Hammer crusher
C. Ball mill
D. Tube mill

Categories Mechanical Operations

The resistance offered by the filter used in a bag filter is proportional to (where, c = dust concentration, and s = particle size)?

August 23, 2021February 18, 2019 by admin
The resistance offered by the filter used in a bag filter is proportional to (where, c = dust concentration, and s = particle size)?

A. c/s
B. s/c
C. s . c
D. 1/s . c

Categories Mechanical Operations

The cake resistance increases steadily with the time of filtration in a plate and frame filter employing constant ______________ filtration?

August 23, 2021February 18, 2019 by admin
The cake resistance increases steadily with the time of filtration in a plate and frame filter employing constant ______________ filtration?

A. Rate
B. Pressure
C. Both A. & B.
D. Neither A. nor B.

Categories Mechanical Operations
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