Mechanical Engineering :: Thermodynamics
- For the constant pressure and heat input, the air standard efficiency of gas power cycle is in the order
- The __________ states that change of internal energy of a perfect gas is directly proportional to the change of temperature.
- Select the wrong statement
- The change of entropy, when heat is absorbed by the gas, is
- When gas is heated at constant pressure, the heat supplied is utilized in
- Superheated vapour behaves
- Which of the following statement is correct?
- Which of the following statement is correct?
- The heat flows from a cold body to a hot body with the aid of an external source. This statement is given by
- Energy can neither be created nor destroyed, but it can be transformed from one form to another. This statement is known as
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A.
The increase in entropy is obtained from a given quantity of heat at a low temperature. |
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B.
The change in entropy may be regarded as a measure of the rate of the availability or unavailability of heat for transformation into work. |
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C.
The entropy represents the maximum amount of work obtainable per degree drop in temperature. |
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D.
All of the above |