Engineering Thermodynamics
When the gas is heated at constant volume, the heat supplied

Does some external work during expansion
Increases the internal energy of the gas and increases the temperature of the gas
Both (A) and (B)
None of these

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Engineering Thermodynamics
In order that a cycle be reversible, following must be satisfied

When heat is being absorbed, temperature of hot source and working substance should be same
Free expansion or friction resisted expansion/compression process should not be encountered
When beat is being rejected, temperature of cold source and working substance should be same
All of these

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