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Engineering Thermodynamics

Engineering Thermodynamics
Entropy change depends on

Thermodynamic state
Change of temperature
Mass transfer
Heat transfer

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Engineering Thermodynamics
When gas is heated at constant pressure, the heat supplied is utilized in

None of these
Increasing the internal energy of gas
Doing some external work
Increasing the internal energy of gas and also for doing some external work

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Engineering Thermodynamics
Work done is zero for the following process

Throttling
All of the listed here
Free expansion
Constant volume

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Engineering Thermodynamics
In an isothermal process

There is no change in enthalpy
There is no change in temperature
There is no change in internal energy
All of the listed here

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Engineering Thermodynamics
The compression ratio for Diesel engines is

5 to 8
20 to 30
3 to 6
15 to 20

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Engineering Thermodynamics
Energy can neither be created nor destroyed, but it can be transformed from one form to another. This statement is known as

First law of thermodynamics
Kinetic theory of gases
Zeroth law of thermodynamics
Second law of thermodynamics

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