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Fuels and Combustion

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

Low ash
High ash
High volatile matter
High calorific value

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Fuels and Combustion
Calorific values of both the solid as well as the liquid fuels can be determined by __________ calorimeter.

Bomb
Junkar's
Boy's
None of these

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

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Fuels and Combustion
Abrasion index of blast furnace coke should be around __________ percent.

35
80
20
55

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Fuels and Combustion
Air/gas ratio for complete combustion will be the highest for

Coke oven gas
Carburetted water gas
LPG
Gobar gas

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Fuels and Combustion
Mineral matter, 'M' and ash percentage 'A' in coal are roughly related as

M = A
M = 1.8 A
M = 0.5 A
M = 1.1 A

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