Multiple choice

Which one of the following pairs of equations describes an irreversible heat engine?

  1. $\oint SQ$ > 0 and $\oint \frac{SQ}{T}$ < 0
  2. $\oint SQ$ < 0 and $\oint \frac{SQ}{T}$ < 0
  3. $\oint SQ$ > 0 and $\oint \frac{SQ}{T}$ > 0
  4. $\oint SQ$ < 0 and $\oint \frac{SQ}{T}$ > 0
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Correct option is (1).

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