Multiple-choice questions. Pick the best answer from the list of possible answer

ID: 1841701 • Letter: M

Question

Multiple-choice questions. Pick the best answer from the list of possible answers provided for each question.

1- Which of the following is not an appropriate strategy to reduce nitric oxide emissions?

increase the temperature; burn fuel rich; reduce oxygen availability

2- A mixture fraction is useful to describe which class of flames?

premixed flames; nonpremixed flames

3- The assumption of infinitely fast chemistry is useful to describe which class of flames?

premixed flames; nonpremixed flames

4- Which two pollutants are most relevant in photochemical smog formation?
NOx and unburned hydrocarbons; particulate matter and CO; NOx and CO

5- The production of which pollutant does not tend to increase as the equivalence ratio increases to values greater than unity?

NOx; unburned hydrocarbons; CO; particulate matter

1. Increasing temperature increases nitric oxide emissions.

2. Non- Premixed flames.

3. Premixed flames.

4. NOx and unburned hydrocarbons.

5. Particulate Matter

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