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 6 of 46

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Q51.
Pick out the wrong statement pertaining to the roll crushers.

a.

Maximum feed size determines the required roll diameter.

b.

For hard material's crushing, the reduction ratio should not exceed 4.

c.

Both the rolls run necessarily at the same speed.

d.

Reduction ratio and differential roll speed affect production rate & energy consumed per unit of surface produced.

Discuss
Answer: (c).Both the rolls run necessarily at the same speed.
Q52.
The inlet pressure in a constant rate filtration

a.

increases continuously

b.

decreases gradually

c.

remains constant

d.

none of these

Discuss
Answer: (a).increases continuously
Q53.
Size reduction of moulding powders, waxes, resins & gums are done in a __________ mill.

a.

cage

b.

hammer

c.

both (a) & (b)

d.

neither (a) nor (b)

Discuss
Answer: (c).both (a) & (b)
Q54.
Particle size range in which dust catcher (gravity settling chamber) works most effectively and efficiently is __________ microns.

a.

< 5

b.

10 to 25

c.

< 74

d.

> 1000

Discuss
Answer: (c).< 74
Q55.
__________ centrifuge is the most suitable for separation of non-friable crystals.

a.

Tubular bowl

b.

Disc-bowl

c.

Perforated horizontal basket continuous

d.

Suspended batch basket

Discuss
Answer: (c).Perforated horizontal basket continuous
Q56.
For benefication of iron ore, the most commonly used method is

a.

flocculation.

b.

froth floatation.

c.

jigging & tabling.

d.

none of these.

Discuss
Answer: (c).jigging & tabling.
Q57.
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
Q58.
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)
Q59.
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
Q60.
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.
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