Fuels and Combustion Coking time in a commercial high temperature coal carbonisation plant is about __________ hours. 18 6 36 28 18 6 36 28 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A good metallurgical coke Should be brittle Should have low fusion point of its ash Must contain moderate quantities of ash, moisture, sulphur and volatile matters Should have high porosity Should be brittle Should have low fusion point of its ash Must contain moderate quantities of ash, moisture, sulphur and volatile matters Should have high porosity ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The bright glow of a combustion process is the characteristic of __________ temperature oxidation of coal. Fast & slow Slow & high Slow & low Fast & high Fast & slow Slow & high Slow & low Fast & high ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following has the highest calorific value? Lignite Sub-bituminous coal Peat Anthracite Lignite Sub-bituminous coal Peat Anthracite ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Ash content in the middling coal (a byproduct of coal washeries) in India ranges between __________ percent. 55 to 75 35 to 45 75 15 to 25 55 to 75 35 to 45 75 15 to 25 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Oxygen content in a flue gas was found to be 4%. It implies that excess air used for combustion was around __________ percent. 40 4 20 96 40 4 20 96 ANSWER DOWNLOAD EXAMIANS APP
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