General Studies · Thermodynamics
Which of the following represents an INCORRECT expression for the air-standard efficiency of an Otto cycle? (where T1, T2, T3, and T4 are the absolute temperatures at states 1, 2, 3, and 4 respectively)
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1ηth = 1 - (T1 / T2)
- 2ηth = 1 - (T4 - T1) / (T3 - T2)
- 3ηth = 1 - (T1 / T4)✓
- 4ηth = 1 - (T4 / T3)
Correct answer
ηth = 1 - (T1 / T4)
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