iran-konkur 2013 Q169

iran-konkur · Other · konkur-riazi_1392 Not Maths
169- If we reduce the cold source temperature of a heat engine that performs $100$ joules of work with a Carnot cycle by $20\%$, and increase $\eta$ by $20\%$, the temperature of the cold source of this engine is how many degrees Celsius?
(1) $500$ (2) $327$ (3) $300$ (4) $227$
\textbf{169-} If we reduce the cold source temperature of a heat engine that performs $100$ joules of work with a Carnot cycle by $20\%$, and increase $\eta$ by $20\%$, the temperature of the cold source of this engine is how many degrees Celsius?

(1) $500$ \hfill (2) $327$ \hfill (3) $300$ \hfill (4) $227$