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 39 of 46

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Q381.
__________ mill is not used for grinding wheat into flour and for milling of cereals & other vegetable products.

a.

Buhrstone

b.

Roller

c.

Attrition

d.

Pebble

Discuss
Answer: (d).Pebble
Q382.
In case of a hammer crusher, the final product size depends on the

a.

feed rate.

b.

rotor speed.

c.

clearance between hammer & grinding plates.

d.

all (a), (b) and (c).

Discuss
Answer: (d).all (a), (b) and (c).
Q383.
Sedimentation on commercial scale occurs in

a.

classifiers

b.

thickeners

c.

rotary drum filters

d.

cyclones

Discuss
Answer: (c).rotary drum filters
Q384.
With increase in drum speed, in a rotary drum filter, the filtration rate

a.

increases

b.

increases linearly

c.

decreases

d.

is not affected

Discuss
Answer: (a).increases
Q385.
Arrange the following size reduction equipment in the decreasing order of the average particle size produced by each of them.

a.

Jaw crusher, Ball mill, Fluid energy mill

b.

Ball mill, Jaw crusher, Fluid energy mill

c.

Fluid energy mill, Jaw crusher, Ball mill

d.

Fluid energy mill, Ball mill, Jaw crusher

Discuss
Answer: (a).Jaw crusher, Ball mill, Fluid energy mill
Q386.
200 mesh seive size corresponds to __________ microns.

a.

24

b.

74

c.

154

d.

200

Discuss
Answer: (b).74
Q387.
What is the usual value of angle of nip for crushing of ordinary rock in smooth steel crushing rolls ?

a.

16°

b.

32°

c.

40°

d.

46°

Discuss
Answer: (b).32°
Q388.
Wet grinding in a revolving mill __________ as compared to dry grinding.

a.

gives less wear on chamber walls

b.

requires more energy

c.

increases capacity

d.

complicates handling of the product

Discuss
Answer: (c).increases capacity
Q389.
The grinding in a hammer crusher takes place due to the

a.

attrition

b.

impact

c.

both (a) & (b)

d.

neither (a) nor (b)

Discuss
Answer: (c).both (a) & (b)
Q390.
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.

Discuss
Answer: (a).maximum porosity at the upstream side.
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