The amount of excess air for proper combustion of fuel may vary from?
A. 5 to 30%
B. 15 to 60%
C. 10 to 50%
D. 10 to 60%
E. 5 to 50%
Answer: D
The amount of excess air for proper combustion of fuel may vary from
A. 5 to 30%
B. 15 to 60%
C. 10 to 50%
D. 10 to 60%
E. 5 to 50%
Answer: D