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Engineering Thermodynamics

Engineering Thermodynamics
Second law of thermodynamics defines

Work
Entropy
Internal energy
Heat

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Engineering Thermodynamics
The change of entropy, when heat is absorbed by the gas, is

Negative
None of these
Positive or negative
Positive

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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

Pressure
Internal energy
Volume
Temperature

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Engineering Thermodynamics
In a no flow reversible process for which p = (-3V + 15) × 105 N/m², V changes from 1 m3 to 2 m3. The work done will be about

100 × 10⁵ joules
1 × 10⁵ joules
10 × 10⁵ joules
10 × 10⁵ kilo joules

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Engineering Thermodynamics
Superheated vapour behaves

As ordinary vapour
As steam
Exactly as gas
Approximately as a gas

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Engineering Thermodynamics
The sum of internal energy (U) and the product of pressure and volume (p.v) is known as

Entropy
Work done
Enthalpy
Power

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MORE MCQ ON Engineering Thermodynamics

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