Engineering Thermodynamics
According to Regnault's law, the specific heat at constant pressure (cp) and specific heat at constant volume (cv) _________ with the change in pressure and temperature of the gas.

Change
Do not change
Both (A) and (B)
None of these

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Engineering Thermodynamics
A closed system is one in which

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

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