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← ScienceWhich outcome results from exceeding engine temperature design limits?
A)Premature component fatigue cracking occurs✓
B)Increased efficiency during shorter cycling
C)Decreased formation of soot emissions
D)Enhanced fuel economy at altitude
💡 Explanation
Exceeding design temperatures increases thermal stress, therefore premature fatigue cracking occurs due to increased cyclic loading's **ratcheting** mechanism during heat cycles, because increased plastic deformation is promoted rather than elastic deformation only.
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