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Engineering Thermodynamics

Engineering Thermodynamics
Which of the following processes is irreversible process?

Adiabatic
Isothermal
All of these
Throttling

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Engineering Thermodynamics
The state of a substance whose evaporation from its liquid state is complete, is known as

Perfect gas
Air
Steam
Vapour

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Engineering Thermodynamics
Which of the following is an irreversible cycle?

None of these
Carnot
Ericsson
Stirling

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Engineering Thermodynamics
The temperature at which the volume of a gas becomes zero is called

None of these
Absolute temperature
Absolute zero temperature
Absolute scale of temperature

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Engineering Thermodynamics
In an isothermal process, the internal energy of gas molecules

Remain constant
Decreases
May increase/decrease depending on the properties of gas
Increases

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Engineering Thermodynamics
Otto cycle consists of following four processes

Two isentropic and two constant volumes
Two isentropic, one constant volume and one constant pressure
Two isentropic and two constant pressures
Two isothermal and two isentropic

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