Fuels and Combustion During combustion of gaseous fuels, deficiency of air Tends to shorten the flame Increases the flame temperature Lengthens the flame Does not affect the flame length Tends to shorten the flame Increases the flame temperature Lengthens the flame Does not affect the flame length ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Spontaneous combustion of coal on storage results due to Low temperature oxidation All of these Inadequate ventilation Storage in large heaps with small surface to volume ratio Low temperature oxidation All of these Inadequate ventilation Storage in large heaps with small surface to volume ratio ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Low temperature carbonisation Is mainly for producing the smokeless domestic coke Produces higher quantity of gas than high temperature carbonisation Produces less quantity of tar than high temperature carbonisation Is meant for the production of 'metallurgical coke' Is mainly for producing the smokeless domestic coke Produces higher quantity of gas than high temperature carbonisation Produces less quantity of tar than high temperature carbonisation Is meant for the production of 'metallurgical coke' ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Presence of phosphorous in metallurgical coal Is not undersirable Reduces its calorific value Badly affects the quality of steel Increases its caking power Is not undersirable Reduces its calorific value Badly affects the quality of steel Increases its caking power ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Temperature of preheated air used for the transportation of pulverised coal through pipes to the burner of a boiler furnace is restricted to a maximum limit of about 300° C to avoid the Chances of clinker formation Risk of explosion Incomplete combustion of coal Requirement of large volume combustion chamber Chances of clinker formation Risk of explosion Incomplete combustion of coal Requirement of large volume combustion chamber ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Benzol is used Neither A nor B For producing benzene, tolune & xylene by its distillation As a motor fuel blend Both A & B Neither A nor B For producing benzene, tolune & xylene by its distillation As a motor fuel blend Both A & B ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS