Air contained within a piston–cylinder assembly undergoes three processes in series: Process 1–2: Compression during which the pressure–volume relationship is pV = constant from p1 = 10 lbf/in.2, V1 = 4 ft3 to p2 = 50 lbf/in.2 Process 2–3: Constant volume from state 2 to state 3 where p = 10 lbf/in.2 Process 3–1: Constant pressure expansion to the initial state. Sketch the processes in series on p–

Elements Of Electromagnetics
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Air contained within a piston–cylinder assembly undergoes three processes in series:

  • Process 1–2: Compression during which the pressure–volume relationship is pV = constant from p1 = 10 lbf/in.2V1 = 4 ft3 to p2 = 50 lbf/in.2
  • Process 2–3: Constant volume from state 2 to state 3 where p = 10 lbf/in.2
  • Process 3–1: Constant pressure expansion to the initial state.

Sketch the processes in series on pV coordinates. Evaluate (a) the volume at state 2, in ft3, and (b) the work for each process, in Btu.

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