Fuels and Combustion For long flame and easy ignition, the coal used should have High volatile matter High calorific value Low ash High ash High volatile matter High calorific value Low ash High ash ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Washing of coal Reduces its sulphur and ash content Improves its coking properties Controls its ash fusibility and increases its calorific value All of these Reduces its sulphur and ash content Improves its coking properties Controls its ash fusibility and increases its calorific value All of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following is not applicable to fluidised bed combustion of coal? It can not burn low grade coal Less heat transfer surface area is required in boilers It achieves higher fuel combustion efficiency None of these It can not burn low grade coal Less heat transfer surface area is required in boilers It achieves higher fuel combustion efficiency None of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Undercharging of coal in the by-product coke ovens results in Decrease in the c.v. of coke oven gas No change in the c.v. of coke oven gas Increase in the c.v. of coke oven gas Increase in its throughput Decrease in the c.v. of coke oven gas No change in the c.v. of coke oven gas Increase in the c.v. of coke oven gas Increase in its throughput ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coal is heated in presence of air to a temperature of about __________ °C, while determining its ash content for proximate analysis. 1100 950 500 750 1100 950 500 750 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following would require maximum amount of % excess air for complete combustion? Furnace oil Coke oven gas Lump coal (fixed on chain grate) Pulverised coal Furnace oil Coke oven gas Lump coal (fixed on chain grate) Pulverised coal ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS