Fuels and Combustion For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other on volume basis (i.e., kcal/Nm³ ), while the C.V. is same on weight basis (i.e., kcal/kg) ? Propane and acetylene Sewage gas and gobar gas Propane and LPG F. gas and coke oven gas Propane and acetylene Sewage gas and gobar gas Propane and LPG F. gas and coke oven gas ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A particular coal is said to be free burning when it None of these Shows little or no fusing action Gives smokeless burning Burns completely None of these Shows little or no fusing action Gives smokeless burning Burns completely ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Percentage of methane in coke oven gas may be around 5 25 50 15 5 25 50 15 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following coal gasification processes will produce gas having maximum methane content? Winkler process Kopper-Totzek process Lurgi process All of these Winkler process Kopper-Totzek process Lurgi process All of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Short/intense flame is produced during combustion of gaseous fuel by using Preheated secondary air High amount/current of combustion air Very little excess air Low amount/current of combustion air Preheated secondary air High amount/current of combustion air Very little excess air Low amount/current of combustion air ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Rate of low temperature oxidation of coal due to bad storage conditions Decreases with increase in surface area Is more for low volatile coal compared to high volatile coal Does not vary with increase in surface area Is accelerated by storage in large heaps with small surface to volume ratio Decreases with increase in surface area Is more for low volatile coal compared to high volatile coal Does not vary with increase in surface area Is accelerated by storage in large heaps with small surface to volume ratio ANSWER DOWNLOAD EXAMIANS APP
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