InterviewSolution
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InterviewSolution
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Consider a heat engine as shown in (figure). `Q_(1) and Q_(2)` are heat added to heat bath `T_(1)` and heat taken from `T_(2)` one cycle of engine. `W` is the mechanical work done on the engine. If `Wgt0`, then possibillities are:A. `Q_(1)gtQ_(2)gt0`B. `Q_(2)gtQ_(1)gt0`C. `Q_(3)ltQ_(1)lt0`D. `Q_(1)lt0,Q_(2)gt0` |
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Answer» Correct Answer - A::C Consider the figure we can write `Q_(1)=W+Q_(2)` `rArrW=Q_(1)gtQ_(2)gt0` (if both `Q_(1)` and `Q_(2)` are positive) We can also, write `Q_(2)ltQ_(1)lt0` (if both `Q_(1)` and `Q_(2)` are negative). |
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