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Engineering Thermodynamics

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

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

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Engineering Thermodynamics
The efficiency of the Carnot cycle is (where T1 and T2 = Highest and lowest temperature during the cycle)

(T1/T2) - 1
1 - (T2/T1)
1 - (T1/T2)
1 + (T2/T1)

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Engineering Thermodynamics
Temperature of a gas is produced due to

Kinetic energy of molecules
Surface tension of molecules
Repulsion of molecules
Its heating value

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Engineering Thermodynamics
Change in enthalpy in a closed system is equal to heat transferred if the reversible process takes place at constant

Temperature
Volume
Internal energy
Pressure

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Engineering Thermodynamics
The variables which control the physical properties of a perfect gas are

Pressure exerted by the gas
Temperature of the gas
All of these
Volume occupied by the gas

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Engineering Thermodynamics
When coal is first dried and then crushed to a fine powder by pulverizing machine, the resulting fuel is called

None of these
Bituminous coal
Briquetted coal
Wood charcoal

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