Engineering Thermodynamics
An isolated system is one in which

Mass crosses the boundary but not the energy
Neither mass nor energy crosses the boundaries of the system
Mass does not cross boundaries of the system, though energy may do so
Both energy and mass cross the boundaries of the system

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Engineering Thermodynamics
Select the wrong statement

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

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Engineering Thermodynamics
According to Avogadro's law, for a given pressure and temperature, each molecule of a gas

Occupies volume inversely proportional to its molecular weight
Occupies volume proportional to its specific weight
Occupies same volume
Occupies volume inversely proportional to its specific weight

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