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Statement I: Combustion efficiency is quoted mainly for idle and altitude relight rather than cruise.

Statement II: At cruise a modern chamber exceeds ninety nine per cent efficiency.

In the light of the above statements, choose the correct answer.

  • A.Statement I is incorrect but Statement II is correct
  • B.Both Statement I and Statement II are correct
  • C.Both Statement I and Statement II are incorrect
  • D.Statement I is correct but Statement II is incorrect

Answer: B

Both statements are true and the second is the reason. Where almost all the fuel is burned the figure discriminates between nothing, so pressure loss and emissions become the parameters that actually separate good chambers from poor ones.

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