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A Carnot engine, with its cold body at 17°C, has 50% efficiency. If the temperature of its hot body is now increased by 145°C, the efficiency becomes _____?

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A Carnot engine, with its cold body at 17°C, has 50% efficiency. If the temperature of its hot body is now increased by 145°C, the efficiency becomes _____? Answer: 60%

The Carnot engine efficiency depends on hot and cold reservoir temperatures. Increasing the hot body temperature increases efficiency.

Question context

This question is part of ⚙️ Mechanical Eng within the broader 🛠️ Engineering Essentials subject and appears in the SPSC – Sindh Public Service Commission preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.