Engineering Thermodynamics
Which of the following process can be made reversible with the help of a regenerator?

Constant pressure process
All of these
Constant pvn process
Constant volume process

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Engineering Thermodynamics
An isolated system is one in which

Neither mass nor energy crosses the boundaries of the system
Mass crosses the boundary but not the energy
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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