Engineering Thermodynamics
In a no flow reversible process for which p = (-3V + 15) × 105 N/m², V changes from 1 m3 to 2 m3. The work done will be about

10 × 10⁵ kilo joules
10 × 10⁵ joules
100 × 10⁵ joules
1 × 10⁵ joules

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Engineering Thermodynamics
The condition for the reversibility of a cycle is

The working parts of the engine must be friction free
All the processes, taking place in the cycle of operation, must be extremely slow
The pressure and temperature of the working substance must not differ, appreciably, from those of the surroundings at any stage in the process
All of these

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