Mechanical Operations - Part 1 Online Exam Quiz
Mechanical Operations - Part 1 GK Quiz. Question and Answers related to Mechanical Operations - Part 1. MCQ (Multiple Choice Questions with answers about Mechanical Operations - Part 1
Short distance transportation of grain, gravel, sand, ash, asphalt etc. is done by using a __________ conveyor.
Options
A : flight
B : slat or drag
C : ribbon
D : screw
Equivalent diameter of a particle is the diameter of the sphere having the same
Options
A : ratio of surface to volume as the actual volume.
B : ratio of volume to surface as the particle.
C : volume as the particle.
D : none of these.
If dp is the equivalent diameter of a non-spherical particle, V p its volume and sp its surface area, then its sphericity is ? s is defined by
Options
A : ? s = 6 V p /d p s p
B : ? s = V p /d p s p
C : ? s = 6 d p S p /V p
D : ? s = d p S p /V p
Power required to drive a ball mill with a particular ball load is proportional to (where, D = diameter of ball mill )
Options
A : D
B : 1/ D
C : D 2.5
D : 1/ D 2.5
Pick out the wrong statement.
Options
A : Recycled coarse material to the grinder by a classifier is termed as circulating load.
B : Wear and tear in wet crushing is more than that in dry crushing of materials.
C : Size enlargement (opposite of size reduction) is not a mechanical operation.
D : A 'dust catcher' is simply an enlargement in a pipeline which permits the solids to settle down due to reduction in velocity of the dust laden gas.
In continuous filtration (at a constant pressure drop), filtrate flow rate varies inversely as the
Options
A : square root of the velocity.
B : square of the viscosity.
C : filtration time only.
D : washing time only.
For sizing of fine materials, the most suitable equipment is a
Options
A : trommel
B : grizzly
C : shaking screen
D : vibrating screen
Which of the following is not categorised as a "mechanical operation" ?
Options
A : Agitation
B : Filtration
C : Size enlargement
D : Humidification
Which of the following is a pressure filter ?
Options
A : Leaf filter (Moore filter).
B : Plate and flame filter.
C : Rotary drum filter.
D : Sand filter.
Tabular bowl centrifuges as compared to disk bowl centrifuges
Options
A : operate at higher speed.
B : employ bowl of larger diameter.
C : can not be operated under pressure/vacuum.
D : can't be used for separation of fine suspended solids from a liquid.
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