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 24 of 50

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Q231.
Net calorific value is the gross calorific value less the __________ heat of water in the product of combustion when cooled to 15°C.

a.

sensible

b.

latent

c.

sensible and latent

d.

none of these

Discuss
Answer: (c).sensible and latent
Q232.
The catalyst used in shift converter is

a.

nickel

b.

vanadium

c.

silica gel

d.

alumina

Discuss
Answer: (a).nickel
Q233.
The optimum percentage of excess air for combustion depends upon the __________ of the fuel.

a.

type (solid, liquid or gaseous)

b.

calorific value

c.

sulphur content

d.

ignition temperature

Discuss
Answer: (a).type (solid, liquid or gaseous)
Q234.
Fuel for a nuclear reactor (thermal) is

a.

uranium

b.

plutonium

c.

radium

d.

none of these

Discuss
Answer: (a).uranium
Q235.
Calorific value of

a.

light paraffinic fuel oils is equal to that of equivalent olefins.

b.

n-paraffin is lower than that of iso-paraffins of the same compounds.

c.

light paraffinic fuel oils is higher than that of equivalent olefins.

d.

light paraffinic fuel oils is lower than that of equivalent olefins.

Discuss
Answer: (c).light paraffinic fuel oils is higher than that of equivalent olefins.
Q236.
Which of the following would require least amount of secondary air for combustion ?

a.

Coke breeze containing 25% ash and 2% volatile matter.

b.

Anthracite containing 10% volatile matter and 8% ash.

c.

Bituminous coal containing 20% ash and 25% volatile matter.

d.

Semi-bituminous coal containing 25% ash and 20% volatile matter.

Discuss
Answer: (a).Coke breeze containing 25% ash and 2% volatile matter.
Q237.
'Fat coals' are those coals which have very high

a.

caking capacity.

b.

volatile matter content.

c.

fusion point of its ash.

d.

inherent moisture content.

Discuss
Answer: (a).caking capacity.
Q238.
Highly reactive coke have lower

a.

porosity.

b.

coke reactivity index (CRI).

c.

Critical air blast (CAB) value.

d.

both (b) and (c).

Discuss
Answer: (c).Critical air blast (CAB) value.
Q239.
A coal with high ash content

a.

has higher calorific value.

b.

is harder and stronger.

c.

is not subjected to washing.

d.

has low quantity of mineral matter.

Discuss
Answer: (b).is harder and stronger.
Q240.
The shift conversion reaction taking place during water gas manufacture is given by

a.

C + H₂O ↔ CO + H₂

b.

C + 2H₂O ↔ CO₂ + 2H₂

c.

CO + H₂O ↔ CO₂ + H₂

d.

none of these

Discuss
Answer: (c).CO + H₂O ↔ CO₂ + H₂
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