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Engineering Thermodynamics

Engineering Thermodynamics
Which law states that the internal energy of a gas is a function of temperature?

Joule's law
Charles' law
There is no such law
Boyle's law

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Engineering Thermodynamics
The polytropic index (n) is given by

log (p2/ p1)/log (v1/ v2)
log (v1/ v2)/ log (p1/p2)
log [(p1v1)/(p2v2)]
log (p1p2)/log (v1v2)

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Engineering Thermodynamics
Kelvin Planck's law deals with

Conservation of work
Conversion of heat into work
Conversion of work into heat
Conservation of heat

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Engineering Thermodynamics
One reversible heat engine operates between 1600 K and T2 K and another reversible heat engine operates between T2 K and 400 K. If both the engines have the same heat input and output, then temperature T2 is equal to

1000 K
1400 K
800 K
1200 K

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Engineering Thermodynamics
Mixture of ice and water form a

Open system
Isolated system
Closed system
Heterogeneous system

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Engineering Thermodynamics
The heat and mechanical energies are mutually convertible. This statement was established by

Charles
None of these
Joule
Boyle

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