Fuels and Combustion
Ignition temperature of a fuel in air is __________ that in pure oxygen.

Less than
Either more or less; depends on the type of fuel
More than
Equal to

ANSWER DOWNLOAD EXAMIANS APP

Fuels and Combustion
Fixed carbon in coal is defined as

The total quantity of carbon present in the coal
Hundred minus the percentage of volatile matter, ash and moisture
That present in volatile matters
The one which is present in the residue after combustion

ANSWER DOWNLOAD EXAMIANS APP

Fuels and Combustion
A liquid/gaseous fuel containing hydrocarbons and high amount of sulphur is burnt with 40% excess air. The flue gas still contains large amount of carbon monoxide. This may be due to the

Presence of large quantity of hydrogen in the fuel
High sulphur content in the fuel
Low calorific value of the fuel
Lack of thorough mixing of fuel with air

ANSWER DOWNLOAD EXAMIANS APP