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Engineering Thermodynamics

Engineering Thermodynamics
Entropy change depends on

Heat transfer
Thermodynamic state
Change of temperature
Mass transfer

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Engineering Thermodynamics
An actual engine is to be designed having same efficiency as the Carnot cycle. Such a proposition is

Feasible
Possible
Possible, but with lot of sophistications
Impossible

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Engineering Thermodynamics
Which of the following gas has a minimum molecular mass?

Nitrogen
Methane
Oxygen
Hydrogen

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Engineering Thermodynamics
On weight basis, air contains following parts of oxygen

23
21
25
73

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Engineering Thermodynamics
For the constant pressure and heat input, the air standard efficiency of gas power cycle is in the order

Dual cycle, Diesel cycle, Otto cycle
Otto cycle, Diesel cycle, Dual cycle
Diesel cycle, Otto cycle, Dual cycle
Dual cycle, Otto cycle, Diesel cycle

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Engineering Thermodynamics
The efficiency of Diesel cycle increases with

Decrease in cut-off
Constant cut-off
Increase in cut-off
None of these

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MORE MCQ ON Engineering Thermodynamics

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