1.

A system executes a cycle there are four heat transfers: \[{{Q}_{12}}\,\,=\,220\,kJ,\]  \[{{Q}_{23}}=-\,25\,\,kJ,\] \[{{Q}_{34}}=-\,180\,\,kJ,\] \[{{Q}_{41}}\,\,=\,\,50\,\,kJ.\] The work during three of the processes is: \[{{W}_{12}}=15\,\,kJ,\] \[{{W}_{23}}=-\,10\,\,kJ,\] \[{{W}_{34}}=60\,\,kJ.\]The work during the process \[4-1\] is:

A. \[-\,\,230\,kJ\]
B. 0 kJ
C. 230 kJ
D. 130 kJ
Answer» C. 230 kJ


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