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 23 of 50

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Q221.
Steam is intermittently admitted into the fuel bed during the production of producer gas to

a.

convert CO to CO₂.

b.

increase the combustion rate.

c.

increase the gas production rate.

d.

minimise the chances of clinker formation.

Discuss
Answer: (d).minimise the chances of clinker formation.
Q222.
In general, the limit of inflammability/explosion limit of fuel gases is widened by the

a.

increase in gas pressure.

b.

increase in temperature (i.e. preheating).

c.

use of pure oxygen for combustion instead of air.

d.

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

Discuss
Answer: (d).all (a), (b) & (c).
Q223.
Caking coal is desirable for

a.

burning on travelling grate.

b.

coke making.

c.

burning on firebars.

d.

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

Discuss
Answer: (b).coke making.
Q224.
Blast furnace gas compared to coke oven gas has

a.

lower ignition temperature.

b.

narrower limit of inflammability.

c.

higher calorific value.

d.

lower theoretical flame temperature.

Discuss
Answer: (d).lower theoretical flame temperature.
Q225.
"Micum Index" of a coke is a measure of its

a.

reactivity.

b.

porosity.

c.

bulk density.

d.

hardness & strength.

Discuss
Answer: (d).hardness & strength.
Q226.
'Wind loss' resulting from unscientific storage of coal may be the order of about __________ percent.

a.

2.5

b.

7.5

c.

10.5

d.

14.5

Discuss
Answer: (a).2.5
Q227.
Volatile matter content in coking coal may be about __________ percent.

a.

1

b.

7

c.

22

d.

46

Discuss
Answer: (c).22
Q228.
The main function of primary air in pulverised coal fired burner is to

a.

burn CO to CO₂.

b.

dry and transport the coal.

c.

have proper combustion by supplying it around the burner.

d.

preheat the tertiary air used for complete combustion of CO to CO₂.

Discuss
Answer: (b).dry and transport the coal.
Q229.
__________ is used as jet engine fuel.

a.

Petrol

b.

Diesel

c.

Kerosene

d.

LPG

Discuss
Answer: (c).Kerosene
Q230.
The bright glow of a combustion process is the characteristic of __________ temperature oxidation of coal.

a.

fast & high

b.

slow & low

c.

slow & high

d.

fast & slow

Discuss
Answer: (a).fast & high
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