Engineering Thermodynamics
Compressed air coming out from a punctured football

Remains at the same temperature
May become hotter or cooler depending upon the humidity of the surrounding air
Becomes hotter
Becomes cooler

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Engineering Thermodynamics
Select the wrong statement

A Joule cycle consists of two constant volume and two isentropic processes.
An Ericsson cycle consists of two constant pressure and two isothermal processes.
All of these
An Otto cycle consists of two constant volume and two isentropic processes.

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