13. The temperature of sink of Carnot engine is 27°C. Efficiency of engine is 25%. Then temperature of source is
(a) 227°C (b) 327°C
(c) 127°C (d) 27°C
Answer-c
(78)
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10. In pressure-volume diagram given below, the isochoric, isothermal, and isobaric parts respectively, are
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(a) BA, AD, DC (b) DC, CB, BA (c) AB, BC, CD (d) CD, DA, AB Explanation-(d) Process CD is isochoric as volume is constant, Process DA is isothermal as temperature constant and Process AB is isobaric as pressure is …