Mechanical Operations

Which of the following may prove unsuitable for filtering volatile liquids ?

Byadmin February 18, 2019August 22, 2021

Which of the following may prove unsuitable for filtering volatile liquids ?

A. Pressure filter
B. Gravity filter
C. Centrifugal filter
D. Vacuum filter

Mechanical Operations

A _____________ mill is a revolving mill divided into two or more sections by perforated partitions in which preliminary grinding takes place at one end and the finishing grinding at the discharge end?

A _____________ mill is a revolving mill divided into two or more sections by perforated partitions in which preliminary grinding takes place at one end and the finishing grinding at the discharge end?

A. Compartment
B. Tube
C. Rod
D. Pebble

Read More A _____________ mill is a revolving mill divided into two or more sections by perforated partitions in which preliminary grinding takes place at one end and the finishing grinding at the discharge end?
Mechanical Operations

Xanthates are used in the froth floatation process as a/an _______________________?

Xanthates are used in the froth floatation process as a/an _______________________?

A. Conditioner
B. Frother
C. Collector
D. Activator

Read More Xanthates are used in the froth floatation process as a/an _______________________?
Mechanical Operations

Crushing efficiency is the ratio of the ______________________ ?

Crushing efficiency is the ratio of the ______________________ ?

A. Surface energy created by crushing to the energy absorbed by the solid
B. Energy absorbed by the solid to that fed to the machine
C. Energy fed to the machine to the surface energy created by crushing
D. Energy absorbed by the solid to the surface energy created by crushing

Read More Crushing efficiency is the ratio of the ______________________ ?
Mechanical Operations

Kick’s law assumes that the energy required for size reduction is proportional to the logarithm of the ratio between the initial and the final diameters. The unit of Kick’s constant is_________________?

Kick’s law assumes that the energy required for size reduction is proportional to the logarithm of the ratio between the initial and the final diameters. The unit of Kick’s constant is_________________?

A. kW. sec/kg
B. kWh/kg
C. kWh/sec. kg
D. kg/sec

Read More Kick’s law assumes that the energy required for size reduction is proportional to the logarithm of the ratio between the initial and the final diameters. The unit of Kick’s constant is_________________?
Mechanical Operations

Gravity settling process is not involved in the working of a________________?

Gravity settling process is not involved in the working of a________________?

A. Hydrocyclone
B. Classifier
C. Dorr-thickener
D. Sedimentation tank

Read More Gravity settling process is not involved in the working of a________________?
Mechanical Operations

Maximum size reduction in a ball mill is done by the, ______________ action?

Maximum size reduction in a ball mill is done by the, ______________ action?

A. Attrition
B. Compression
C. Impact
D. Cutting

Read More Maximum size reduction in a ball mill is done by the, ______________ action?

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