High excess air in combustion of fuels results in____________________?
Correct answer: D. Increased fuel consumption
- A. None of these
- B. Incomplete combustion
- C. Smoky flame
- D. Increased fuel consumption
Explanation
Excess air dilutes the flame and carries additional nitrogen and unused oxygen through the stack, increasing stack heat loss. More fuel is therefore required to supply the same useful heat, even though excess air normally reduces incomplete combustion and smoke.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
Practise Chemical Process Principles
2,710 free Chemical Process Principles MCQs from Chemical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemical Engineering questions like this
Chemical Engineering is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.
More Chemical Process Principles questions
Very ______________ coals are completely devoid of cokability i.e., it is non-coking ?
Incomplete combustion of a fuel is characterised by the high _______________ in the flue gas?
Pitch creosote mixture (PCM) as compared to furnace oil is a better fuel, because its ___________________?
"Micum Index" of a coke is a measure of its___________________?
_____________ has the widest inflammability limit (explosion limit) of all the gases?
A good metallurgical coke___________________?