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1)

The shown p-V diagram represents the thermodynamic cycle of an engine, operating with an ideal monoatomic gas. The amount of heat  extracted from the source in a single cycle is 

3032021253_p9.JPG


A) p0V0

B) (132)p0V0

C) (112)p0V0

D) 4p0V0

Answer:

Option B

Explanation:

Heat is extracted from the source means heat is given to the system ( or gas) . or Q is positive . This is positive  only along the path ABC

 Heat supplied

     QABC=UABC+WABC

    = nCV(Tf  -Ti)+ area under  p-V graph

=n(32R)(TcTA)+2p0V0

  =32(nRTcnRTA)+2p0V0

   = 32(pcVcpAVA)+2p0V0

    =  32(4p0V0p0V0)+2p0V0

    =   132p0V0