FUELS AND COMBUSTION QUIZ

'Fuel' can be defined as a substance which produces heat by

Nuclear fission

Combustion

All of these

Nuclear fusion

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Increase the combustion rate

Minimise the chances of clinker formation

Increase the gas production rate

Convert CO to CO₂

TRUE ANSWER : ?
YOUR ANSWER : ?

A travelling grate stoker is meant for the efficient burning of __________ coal.

Pulverised

Caking

High ash

Non-caking

TRUE ANSWER : ?
YOUR ANSWER : ?

Adiabatic flame temperature of a fuel is dependent on the initial temperature of

Neither A nor B

Air

Both A & B

Fuel

TRUE ANSWER : ?
YOUR ANSWER : ?

Bomb calorimeter is used to determine the (where, GCV - Gross Calorific Value. NCV - Net Calorific Value.)

NCV at constant pressure

NCV at constant volume

GCV at constant pressure

GCV at constant volume

TRUE ANSWER : ?
YOUR ANSWER : ?

Water gas constitutes mainly of

CH₄ & H₂

CO & H₂

CO & N₂

CO₂ & H₂

TRUE ANSWER : ?
YOUR ANSWER : ?

Anthracite coal

Ignites more easily than bituminous coal

Burns with short, bluish, yellow-tipped flame producing very little smoke

Is essentially a coking coal

Contains more volatile matter than bituminous coal

TRUE ANSWER : ?
YOUR ANSWER : ?

Advantages of fluidised bed combustion are

Lower furnace operating temperature

High heat transfer rate

All of these

Reduced NOx formation in flue gas

TRUE ANSWER : ?
YOUR ANSWER : ?

Coke ovens in steel plant are heated by

Electricity

Both B & C

Coke oven gas

Mixed gas

TRUE ANSWER : ?
YOUR ANSWER : ?

Size of blast furnace grade coke is __________ mm.

0-15

15-25

>100

25-80

TRUE ANSWER : ?
YOUR ANSWER : ?

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