Engineering Thermodynamics
First law of thermodynamics

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

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Engineering Thermodynamics
The mass of flue gas per kg of fuel is the ratio of the

Mass of oxygen in 1 kg of fuel to the mass of oxygen in 1 kg of flue gas
Mass of carbon in 1 kg of flue gas to the mass of carbon in 1 kg of fuel
Mass of carbon in 1 kg of fuel to the mass of carbon in 1 kg of flue gas
Mass of oxygen in 1 kg of flue gas to the mass of oxygen in 1 kg of fuel

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Engineering Thermodynamics
The efficiency of a gas turbine is given by

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

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