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Which risk increases when a Carnot engine with variable-volume compression operates near isothermal conditions?

A)High heat exchanger surface area
B)Uncontrolled thermal runaway condition
C)Increased lubricant oil decomposition rate
D)Mechanical resonance within drive components

💡 Explanation

An uncontrolled thermal runaway condition is caused by positive feedback. During isothermal conditions, heat generation increases temperature, therefore maintaining required cooling input rises sharply due to exponential temperature sensitivity of the chain reaction mechanism. The system accelerates, rather than stabilizing.

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