Engineering Thermodynamics
Stirling cycle consists of

One constant volume, one constant pressure and two isentropic processes
Two constant pressure and two isothermal processes
Two constant volume and two isentropic processes
Two constant volume and two isothermal processes

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

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

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Engineering Thermodynamics
The specific heat at constant volume is

The amount of heat required to raise the temperature of 1 kg of water through one degree
The amount of heat required to raise the temperature of unit mass of gas through one degree, at constant pressure
The amount of heat required to raise the temperature of unit mass of gas through one degree, at constant volume
Any one of the above

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