Engineering Thermodynamics
A diathermic wall is one which

Discourages thermal interaction
Prevents thermal interaction
Encourages thermal interaction
Permits thermal interaction

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Engineering Thermodynamics
First law of thermodynamics

Provides relationship between heat, work and internal energy
Enables to determine change in internal energy of the system
All of these
Does not enable to determine change in entropy

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Engineering Thermodynamics
The specific heat at constant volume is

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

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Engineering Thermodynamics
Stirling cycle consists of

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

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