FUELS AND COMBUSTION QUIZ

Lurgi gasifier (high pressure gasifier) as compared to Kopper Totzek gasifier (atmospheric pressure gasifier) produces

Higher amount of methane

Higher amount of both methane and hydrogen

Lower amount of hydrogen

Both A & B

TRUE ANSWER : ?
YOUR ANSWER : ?

For long flame and easy ignition, the coal used should have

High ash

High volatile matter

Low ash

High calorific value

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is the most poisonous gas?

Producer gas

Coke oven gas

Blast furnace gas

L.D. converter gas

TRUE ANSWER : ?
YOUR ANSWER : ?

A coal containing very high percentage of durain is called __________ coal.

Bright

Boghead

Splint

Non-banded

TRUE ANSWER : ?
YOUR ANSWER : ?

Fusion point of coal ash increases with increase in its __________ content.

Iron sulphate

Iron silicate

All of these

Lime and magnesia

TRUE ANSWER : ?
YOUR ANSWER : ?

If oxygen content in the flue gas rises too high, fuel is being wasted by

Dry gas/stack gas loss

Moisture loss

None of these

Incomplete combustion

TRUE ANSWER : ?
YOUR ANSWER : ?

Preheating of combustion air is done to

Reduce its requirement for effecting the complete combustion

Complete the combustion of fuel

Increase the calorific value of the fuel

Increase the adiabatic flame temperature

TRUE ANSWER : ?
YOUR ANSWER : ?

Washing of coal does not reduce its

S & P content

Fusion point of ash

None of these

Heating value

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is not a by-product fuel?

Pitch

Petrol

Blast furnace gas

Refinery gas

TRUE ANSWER : ?
YOUR ANSWER : ?

A fuel with high heat release rate will

Have high calorific value

Have high adiabatic flame temperature

None of these

Require smaller combustion chamber

TRUE ANSWER : ?
YOUR ANSWER : ?

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