6. One mole of an ideal gas with y = 1.4 is taken through the cyclic...
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6. One mole of an ideal gas with y = 1.4 is taken through the cyclic process depicted in Fig. 2. From A to B it undergoes an isothermal expansion. (6 pts) (a) Calculate the work done by the gas along each segment AB, BC and CA and add these values to get the total work. P(kPa) 150 100 20 Fig. 2 B 30 -V(L) (6 pts) (b) Find the heat absorbed per cycle by calculating the heat transferred in each segment. (6 pts) (c) Consider the relationship (">", "<" or "") between the answers of parts (a) and (b), explain it by the 1st law. (3 pts) (d) Find the efficiency. 6. One mole of an ideal gas with y = 1.4 is taken through the cyclic process depicted in Fig. 2. From A to B it undergoes an isothermal expansion. (6 pts) (a) Calculate the work done by the gas along each segment AB, BC and CA and add these values to get the total work. P(kPa) 150 100 20 Fig. 2 B 30 -V(L) (6 pts) (b) Find the heat absorbed per cycle by calculating the heat transferred in each segment. (6 pts) (c) Consider the relationship (">", "<" or "") between the answers of parts (a) and (b), explain it by the 1st law. (3 pts) (d) Find the efficiency.
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