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Fuels and Combustion

Fuels and Combustion
Heat penetration rate in narrow coke ovens in high temperature carbonisation of coal is around __________ cm/hr.

20
2.5
10
0.5

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

GCV at constant pressure
NCV at constant volume
NCV at constant pressure
GCV at constant volume

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Fuels and Combustion
Deficiency of combustion air during combustion of a gaseous fuel

Causes heat loss of fuel by its partial combustion
Both A & B
Shortens the flame
Lengthens the flame

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Fuels and Combustion
Which of the following is not a micro component present in coal?

Micrinite
Fusinite
Clarain
Liptinite

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Fuels and Combustion
Which of the following will be unsuitable for dust cleaning from flue gas at 400°C from a pulverised coal fired boiler ?

Multicyclones
Wet scrubber
Hydrocyclones
Bag filter

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Fuels and Combustion
High temperature in gasification of coal favours

Low production of CO₂
High production of CO
High production of CO₂
Both B and C

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