The efficiency of a Carnot engine that is operating between a cold reservoir at temperature Tc and a hot reservoir Th is dependent upon?
Correct answer: B. Only the temperature of two reservoirs
- A. The heat capacity of working substances
- B. Only the temperature of two reservoirs
- C. The reservoir temperature and the heat capacity of working substance
- D. The reservoir temperature and the volume chnage during heat absorption
Explanation
The Carnot engine is a theoretical thermodynamic cycle proposed by Nicolas Léonard Sadi Carnot in 1824. Carnot states that a hot body is required that generates heat and a cold body to which the caloric is conveyed, which produces mechanical work in the process.
This question appeared on the ETEA MDCAT 2005 paper, which you can sit online with every answer explained.
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About Thermal Equilibrium and Heat
Thermal equilibrium means that bodies in contact have the same temperature and no net heat flows between them. The topic distinguishes heat from temperature, uses the zeroth law of thermodynamics, and covers heat transfer, specific heat capacity, thermal expansion and the conditions for reaching equilibrium.
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