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 29 of 50

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Q281.
Natural draft created by the chimney depends upon

a.

temperature of the flue gas.

b.

its height.

c.

both (a) & (b).

d.

neither (a) nor (b).

Discuss
Answer: (c).both (a) & (b).
Q282.
Coke oven gas after passing through return electrostatic tar precipitator (RETP) is used for the

a.

hot scarfing of steel slabs.

b.

mixing with blast furnace gas.

c.

coke oven battery heating.

d.

steel ladle drying.

Discuss
Answer: (c).coke oven battery heating.
Q283.
Calorific value of a typical dry anthracite coal may be around __________ Kcal/kg.

a.

1000

b.

4000

c.

8000

d.

15000

Discuss
Answer: (c).8000
Q284.
The most matured coal out of the following is

a.

lignite

b.

semi-anthracite

c.

sub-bituminous

d.

bituminous

Discuss
Answer: (b).semi-anthracite
Q285.
Presence of force moisture in coal is most disadvantageous during its

a.

transportation and handling

b.

washing

c.

pulverisation

d.

storage

Discuss
Answer: (c).pulverisation
Q286.
Tar is a better fuel than furnace oil, because of its

a.

higher calorific value.

b.

lower sulphur content.

c.

higher emissivity (0.8 - 0.9) resulting in higher radiation heat transfer rate.

d.

both (a) and (b).

Discuss
Answer: (d).both (a) and (b).
Q287.
With increase in moisture content of coal, its

a.

calorific value increases.

b.

caking properties diminish.

c.

swelling during carbonisation becomes excessive.

d.

none of these.

Discuss
Answer: (b).caking properties diminish.
Q288.
Main constituent of natural gas is

a.

CH₄ (upto 90%)

b.

C₂H₆

c.

C₃H₈

d.

H₂

Discuss
Answer: (a).CH₄ (upto 90%)
Q289.
For the case of a fuel gas undergoing combustion with air, if the air/fuel ratio is increased, the adiabatic flame temperature will

a.

increase

b.

decrease

c.

increase or decrease depending on the fuel type

d.

not change

Discuss
Answer: (b).decrease
Q290.
Pick out the wrong statement.

a.

Cokes of high reactivity are obtained from weakly coking coals.

b.

Cokes of high reactivity are obtained from strongly coking coals.

c.

Reactivity of coke is inversely proportional to its absolute density.

d.

Abrasion index of the coke is a measure of its hardness.

Discuss
Answer: (b).Cokes of high reactivity are obtained from strongly coking coals.
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