Question

The combustion efficiency increases with increased excess air - State true or false

• A. True
• B. False

Answer 1

The correct option is A True

To ensure complete combustion of the fuel used, combustion chambers are supplied with excess air. Excess air increases the amount of oxygen to the combustion of fuel. The combustion efficiency increases with increased excess air - until the heat loss in the excess air is larger than the heat provided by more efficient combustion.