Engineering Thermodynamics
A manufacturer claims to have a heat engine capable of developing 20 h.p. by receiving heat input of 400 kcal/mt and working between the temperature limits of 227° C and 27° C. His claim is

Not possible
Cost will be very high
May be possible with lot of sophistications
Theoretically possible

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Engineering Thermodynamics
First law of thermodynamics

Does not enable to determine change in entropy
All of these
Enables to determine change in internal energy of the system
Provides relationship between heat, work and internal energy

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