Question 538: Thermodynamics & KTG

Question

The temperature-entropy diagram of a reversible engine cycle is given in the figure. Its efficiency is

Accepted Answer

$${Q_1} = {T_0}{S_0} + {1 \over 2}{T_0}{S_0} = {3 \over 2}{T_0}{S_0}$$
$${Q_2} = {T_0}\left( {2{S_0} - {S_0}} \right)$$ $$ = {T_0}{S_0}$$
and $${Q_3} = 0$$
$$\eta  = 1 - {{{Q_2}} \over {{Q_1}}} = 1 - {{{T_0}{S_0}} \over {{3 \over 2}{T_0}{S_0}}} = {1 \over 3}$$

Answer

$${1 \over 4}$$

Answer

$${1 \over 2}$$

Answer

$${2 \over 3}$$

Answer

$${1 \over 3}$$

Thermodynamics & KTG

The temperature-entropy diagram of a reversible engine cycle is given in the figure. Its efficiency is

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