Engineering Thermodynamics
According to First law of thermodynamics,

Internal energy, enthalpy and entropy during a process remain constant
Work-done by a system is equal to the heat transferred by the system
Total energy of a system remains constant
Total internal energy of a system during a process remains constant

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Engineering Thermodynamics
The work ratio of a gas turbine plant is given by

(Net work output)/(Heat supplied)
(Net work output)/(Work-done by the turbine)
(Actual temperature drop)/(Isentropic temperature drop)
(Isentropic increase in temperature)/(Actual increase in temperature)

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Engineering Thermodynamics
Which is the incorrect statement about Carnot cycle?

All the heat engines are based on Carnot cycle
All of these
It is used as the alternate standard of comparison of all heat engines
It provides concept of maximising work output between the two temperature limits

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