Fuels and Combustion
Gross and net calorific value of a fuel will be the same

Under no circumstances
Ifits carbon content is very low
If its ash content is zero
If its hydrogen/hydrogen compound content is zero

ANSWER DOWNLOAD EXAMIANS APP

Fuels and Combustion
The main drawback of supplying more excess air in the combustion of fuel is the

Excessive power requirement of air blower
High exit flue gas temperature from the furnace
Intermittant and uncontrolled combustion of the fuel
Enhanced sensible heat loss in the flue gas

ANSWER DOWNLOAD EXAMIANS APP

Fuels and Combustion
Combustion of pulverised fuel

All of these
Requires larger combustion chamber than rich gaseous fuel
Suppresses the discharge of fine dust and grit into atmosphere
In a metallurgical furnace does not contaminate the product in the furnace by ash from fuel

ANSWER DOWNLOAD EXAMIANS APP