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Carnot Cycle & Carnot Engine Video Lecture | Physics Class 11 - NEET
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FAQs on Carnot Cycle & Carnot Engine Video Lecture - Physics Class 11 - NEET
| 1. What is a Carnot cycle? |  |
Ans. The Carnot cycle is a theoretical thermodynamic cycle that describes the most efficient heat engine possible. It consists of four reversible processes: isothermal expansion, adiabatic expansion, isothermal compression, and adiabatic compression. The Carnot cycle is often used as a benchmark for comparing the performance of real-life heat engines.
| 2. How does a Carnot engine work? | |
Ans. A Carnot engine is an idealized heat engine that operates on the Carnot cycle. It works by taking in heat energy from a high-temperature reservoir, converting a part of it into work, and then releasing the remaining heat energy to a low-temperature reservoir. The engine achieves maximum efficiency by utilizing reversible processes and minimizing energy losses.
| 3. What is the efficiency of a Carnot engine? | |
Ans. The efficiency of a Carnot engine is given by the formula: efficiency = 1 - (Tc/Th), where Tc is the temperature of the cold reservoir and Th is the temperature of the hot reservoir. It is important to note that the Carnot engine represents the maximum possible efficiency for any heat engine operating between two given temperatures.
| 4. Can a Carnot engine be built in reality? | |
Ans. While a Carnot engine is an idealized concept, it cannot be built in reality due to certain limitations. The Carnot cycle assumes reversible processes, which are not achievable in practice. Additionally, perfect insulation and infinite heat capacity are required, which are not physically realizable. However, the Carnot cycle serves as a theoretical benchmark for real heat engines to measure their performance.
| 5. What are the practical implications of the Carnot cycle? | |
Ans. The Carnot cycle provides important insights into the thermodynamic efficiency of heat engines. By understanding the theoretical maximum efficiency, engineers can strive to improve the performance of real-life engines. It also helps in identifying areas of energy loss and optimizing the design and operation of various heat engines, such as power plants, car engines, and refrigeration systems.
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Nov 21, 2024 Last updated |
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