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Month: February 2019

Energy consumption in a crusher decreases with increase in the________________________?

August 23, 2021February 18, 2019 by admin
Energy consumption in a crusher decreases with increase in the________________________?

A. Size of the product (at constant feed size)
B. Capacity of the crushing machine
C. Size of feed (at constant reduction ratio)
D. All A., B. & C.

Categories Mechanical Operations

Filter medium resistance is that offered by the__________________?

August 23, 2021February 18, 2019 by admin
Filter medium resistance is that offered by the__________________?

A. Filter cloth
B. Embedded particles in the septum
C. Filter cloth and the embedded particle collectively
D. None of these

Categories Mechanical Operations

Crushing of mineral particles is accomplished in a ‘cage mill’, when one or more alloy steel bars are revolved in opposite directions. It is a type of ______________ mill?

August 23, 2021February 18, 2019 by admin
Crushing of mineral particles is accomplished in a ‘cage mill’, when one or more alloy steel bars are revolved in opposite directions. It is a type of ______________ mill?

A. Impact
B. Roll
C. Vibratory
D. None of these

Categories Mechanical Operations

A compressible cake has the_________________?

August 23, 2021February 18, 2019 by admin
A compressible cake has the_________________?

A. Maximum porosity at the upstream side
B. Maximum porosity at the filter medium
C. Same porosity throughout the cake thickness
D. None of these

Categories Mechanical Operations

Filter medium resistance is important during the ______________ of filtration?

August 23, 2021February 18, 2019 by admin
Filter medium resistance is important during the ______________ of filtration?

A. Early stages
B. Final stages
C. Entire process
D. None of these

Categories Mechanical Operations

The theme of the 32nd African Union summit  was____________?

November 28, 2021February 18, 2019 by admin
The theme of the 32nd African Union summit  was____________?A. The year of the refugees returnees, internally displaced persons
B. Free trade for all
C. Curbing CO2 emission
D. Equality for all

Categories World Current Affairs MCQs

Diatomaceous earth is a/an_________________?

August 23, 2021February 18, 2019 by admin
Diatomaceous earth is a/an_________________?

A. Explosive
B. Filter aid
C. Filter medium
D. Catalyst

Categories Mechanical Operations

Sedimentation on commercial scale occurs in____________________?

August 23, 2021February 18, 2019 by admin
Sedimentation on commercial scale occurs in____________________?

A. Classifiers
B. Thickeners
C. Rotary drum filters
D. Cyclones

Categories Mechanical Operations

Filter aid is used to____________________?

August 23, 2021February 18, 2019 by admin
Filter aid is used to____________________?

A. Increase the rate of filtration
B. Decrease the pressure drop
C. Increase the porosity of the cake
D. Act as a support base for the septum

Categories Mechanical Operations

In a roll crusher, the specific power consumption and the production rate is affected by the_________________?

August 23, 2021February 18, 2019 by admin
In a roll crusher, the specific power consumption and the production rate is affected by the_________________?

A. Reduction ratio
B. Differential roll speed
C. Both A. and B.
D. Neither A. nor B.

Categories Mechanical Operations
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