Fuels and Combustion MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Fuels and Combustion, a fundamental topic in the field of Power Plant Engineering. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Fuels and Combustion 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 Fuels and Combustion mcq questions that explore various aspects of Fuels and Combustion problems. Each MCQ is crafted to challenge your understanding of Fuels and Combustion principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Power Plant Engineering tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Fuels and Combustion MCQs are your pathway to success in mastering this essential Power Plant Engineering topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Fuels and Combustion. 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 Fuels and Combustion knowledge to the test? Let's get started with our carefully curated MCQs!

Fuels and Combustion MCQs | Page 50 of 50

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Q491.
For every 10% increase in the excess air; the fuel consumption increases by __________ percent.

a.

0.1

b.

2

c.

5

d.

10

Discuss
Answer: (a).0.1
Q492.
Fusion point of coal ash increases with increase in its __________ content.

a.

iron sulphate

b.

iron silicate

c.

lime and magnesia

d.

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

Discuss
Answer: (d).all (a), (b) and (c)
Q493.
Pick out the wrong statement.

a.

Pulverised fuel can be completely burnt with less percentage of excess air compared to lump coal.

b.

Low grade coal can be used, but generally high volatile matter coals are more suitable for making pulverised fuel.

c.

Regulation of furnace temperature and atmosphere (oxidising or reducing) is easily possible with pulverised fuel firing.

d.

none of these.

Discuss
Answer: (d).none of these.
Q494.
Dry air required to burn 1 kg of carbon completely may be around __________ kg.

a.

11

b.

2

c.

20

d.

38

Discuss
Answer: (a).11
Q495.
Main component of sewage gas produced during aneorobic decomposition of organic waste (by suitable bacteria) during sewage disposal is

a.

H₂

b.

CH₄

c.

CO₂

d.

N₂

Discuss
Answer: (b).CH₄
Q496.
Atomising steam to fuel oil ratio in a burner should be around

a.

0.5

b.

1.5

c.

2.5

d.

3.5

Discuss
Answer: (a).0.5
Q497.
Pure carbon is completely burnt in oxygen. The flue gas analysis is 70% CO₂, 20% CO and 10% O₂. The percent excess oxygen used is

a.

20

b.

12.5

c.

0

d.

10

Discuss
Answer: (c).0
Q498.
Oxygen percentage (by weight) in atmospheric air is

a.

19

b.

21

c.

23

d.

29

Discuss
Answer: (c).23
Q499.
__________ of the coal is the basis for Seylor's coal classification.

a.

Proximate analysis

b.

Ultimate analysis

c.

Caking index

d.

Calorific value

Discuss
Answer: (b).Ultimate analysis
Q500.
Main constituents of benzol are

a.

benzene, toluene & xylene.

b.

tar & creosote.

c.

ammonia & phenol.

d.

anthracene & phenol.

Discuss
Answer: (a).benzene, toluene & xylene.
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