Mechanical Operations MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Mechanical Operations, a fundamental topic in the field of Basic Chemical Engineering. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Mechanical Operations MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Mechanical Operations mcq questions that explore various aspects of Mechanical Operations problems. Each MCQ is crafted to challenge your understanding of Mechanical Operations principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Basic Chemical Engineering tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Mechanical Operations MCQs are your pathway to success in mastering this essential Basic Chemical Engineering topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Mechanical Operations. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

So, are you ready to put your Mechanical Operations knowledge to the test? Let's get started with our carefully curated MCQs!

Mechanical Operations MCQs | Page 45 of 46

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Q441.
The capacity of a gyratory crusher is __________ that of a jaw crusher with the same gape, handling the same feed & for the same product size range.

a.

same as

b.

2.5 times

c.

5 times

d.

10 times

Discuss
Answer: (b).2.5 times
Q442.
In classification, particles are said to be equal settling, if they have the same terminal velocities in the

a.

different fluids

b.

same fluid

c.

same field of force

d.

both (b) and (c)

Discuss
Answer: (d).both (b) and (c)
Q443.
Dispersion of a gas through liquid is done by using a

a.

sparger

b.

kneader

c.

masticator

d.

none of these

Discuss
Answer: (a).sparger
Q444.
Work index is defined as the

a.

gross energy (kWh/ton of feed) needed to reduce very large feed to such a size that 80% of the product passes through a 100 micron screen.

b.

energy needed to crush one tonne of feed to 200 microns.

c.

energy (kWh/ton of feed) needed to crush small feed to such a size that 80% of the product passes a 200 mesh screen.

d.

energy needed to crush one ton of feed to 100 microns.

Discuss
Answer: (a).gross energy (kWh/ton of feed) needed to reduce very large feed to such a size that 80% of the product passes through a 100 micron screen.
Q445.
Removal of activated carbon from glycerine is done by

a.

plate and frame filter

b.

rotary vacuum filter

c.

batch basket centrifuge

d.

none of these

Discuss
Answer: (a).plate and frame filter
Q446.
A __________ employs a set of screen across a flow channel for the separation of dirt/rust from a flowing liquid stream.

a.

thickener

b.

classifier

c.

strainer

d.

clarifier

Discuss
Answer: (c).strainer
Q447.
Separation of a suspension or slurry into a supernatant clear liquid (free from particles) and a thick sludge containing a high concentration of solid is called

a.

classification

b.

sedimentation

c.

clarification

d.

decantation

Discuss
Answer: (b).sedimentation
Q448.
Reciprocal of sphericity is termed as the

a.

specific surface ratio

b.

shape factor

c.

sauter diameter

d.

surface area per unit mass

Discuss
Answer: (b).shape factor
Q449.
With increase in the pressure drop across the cake, the specific cake resistance for the compressible sludge

a.

increases

b.

decreases

c.

remains constant

d.

increases linearly

Discuss
Answer: (a).increases
Q450.
Pick out the wrong statement.

a.

Hammer crushers operate by impact action.

b.

Standard screens have circular opening.

c.

With increase in mesh number of screens, their diameter in microns decreases.

d.

200 mesh screen has 200 openings per linear cm.

Discuss
Answer: (d).200 mesh screen has 200 openings per linear cm.
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