Energy is said to be degraded each time it flows through a finite temperature difference.

Related MCQs

• Whenever heat is transferred through a finite temperature difference, there is always a decrease in the availability of energy so transferred.
• When considering a finite energy source, its working fluid expands,
• Which law is stated here, “It is impossible to reduce any system to the absolute zero of temperature in a finite number of operations.
• If solar energy Qr is available at a reservoir storage temperature of Tr and if quantity of heat Qa is transferred by the solar collector at temperature Ta, then which of the following is true?
• It is necessary to have a temperature difference to obtain work of any cycle.
• The available energy is known as          and the unavailable energy is known as          
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• Consider the following statements: The definition of 1. temperature is due to zeroth law of thermodynamics 2. entropy is due to first law of thermodynamics 3. internal energy is due to second law of thermodynamics 4. reversibility is due to Kelvin-Planck's ststement of these statements
• For ……. The internal energy & enthalpy are the functions of temperature only
• In an ideal gas there are no intermolecular forces of attraction and repulsion, and the internal energy is a function of temperature only.