Fuels and Combustion Short/intense flame is produced during combustion of gaseous fuel by using Preheated secondary air Very little excess air High amount/current of combustion air Low amount/current of combustion air Preheated secondary air Very little excess air High amount/current of combustion air Low amount/current of combustion air ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Pensky-Marten apparatus is used for those oils, whose flash points are __________ °F. 90-110 >120 90-110 >120 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion When the coal is heated in absence of air, it is called its Coalification Deoxidation Gasification Carbonisation Coalification Deoxidation Gasification Carbonisation ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Oxygen required for theoretically complete combustion of 1 Nm³ methane is __________ Nm³. 2 4 6 1 2 4 6 1 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A coal with high ash content Has low quantity of mineral matter Is harder and stronger Has higher calorific value Is not subjected to washing Has low quantity of mineral matter Is harder and stronger Has higher calorific value Is not subjected to washing ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A coal having high ratio of volatile matter to fixed carbon as compared to a coal having low ratio of volatile matter to fixed carbon Is more difficult to ignite and produces a shorter flame None of these Is less liable to spontaneous combustion on storage Requires smaller combustion space and less secondary air Is more difficult to ignite and produces a shorter flame None of these Is less liable to spontaneous combustion on storage Requires smaller combustion space and less secondary air ANSWER DOWNLOAD EXAMIANS APP
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