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Mechanical Engineering - Thermodynamics

Exercise : Thermodynamics - Section 2
16.
Which is the incorrect statement about Carnot cycle?
It is used as the alternate standard of comparison of all heat engines.
All the heat engines are based on Carnot cycle.
It provides concept of maximising work output between the two temperature limits.
all of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
17.
When two bodies are in thermal equilibrium with a third body, they are also in thermal equilibrium with each other. This statement is called
Zeroth law of thermodynamics
First law of thermodynamics
Second law of thermodynamics
Kelvin Planck's law
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
The area under the temperature-entropy curve (T - s curve) of any thermodynamic process represents
heat absorbed
heat rejected
either (a) or (b)
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
19.
The free expansion process is a constant enthalpy process.
Correct
Incorrect
Answer: Option
Explanation:
No answer description is available. Let's discuss.
20.
The specific heat at constant volume is
the amount of heat required to raise the temperature of unit mass of gas through one degree, at constant pressure
the amount of heat required to raise the temperature of unit mass of gas through one degree, at constant volume
the amount of heat required to raise the temperature of 1 kg of water through one degree
any one of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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