Machine-translated by Google. Questions are authored in English.
Top

Discussion

A recirculation valve that will not open at all leads to what?

  • A.A rough idle, which follows from the exhaust gas being admitted when the engine is unable to tolerate it
  • B.Nothing
  • C.Higher combustion temperatures, which raise the oxides of nitrogen and increase the tendency of the engine to knock
  • D.Raised nitrogen oxides and possible knock

Answer: D

Without dilution the peak temperature rises. The last option explains exactly both consequences, which makes it a correct and fuller version. A rough idle indicates the opposite failure. Naming the cost of a choice alongside its benefit is what turns a fact into a design decision. The order in which the effects act is what decides the outcome, so it is worth establishing first. Working the distinction through on a single concrete case fixes it more firmly than any rule of thumb.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.