A reversible engine operates between temperatures T1 and T2. The energy rejected by this engine is received by a second reversible engine at temperature T2 and rejected to a reservoir at temperature T3. If the efficiencies of the engines are same then the relationship between T1, T2 and T3 is given by

\({T_2} = \left( {{T_1} + 2{T_3}} \right)\)

\({T_2} = \frac{{\left( {{T_1} + {T_3}} \right)}}{2}\)

\({T_2} = \sqrt {T_1^2 + T_3^2} \)

\({T_2} = \sqrt {{T_1}{T_3}} \)

A reversible engine operates between temperatures T1 and T2. The energ

1.	A reversible engine operates between temperatures T1 and T2. The energy rejected by this engine is received by a second reversible engine at temperature T2 and rejected to a reservoir at temperature T3. If the efficiencies of the engines are same then the relationship between T1, T2 and T3 is given by
A.	\({T_2} = \frac{{\left( {{T_1} + {T_3}} \right)}}{2}\)
B.	\({T_2} = \sqrt {T_1^2 + T_3^2} \)
C.	\({T_2} = \sqrt {{T_1}{T_3}} \)
D.	\({T_2} = \left( {{T_1} + 2{T_3}} \right)\)
Answer» D. \({T_2} = \left( {{T_1} + 2{T_3}} \right)\)

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