Calculate the efficiency of a Carnot engine operating between temperatures of 900 K and 300 K.

87

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67

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100

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45

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Solution

The correct option is B $67$ %
Given, the temperature of hot reservoir, $T_{h} = 900 K$ and temperature of cold reservoir, $T_{c} = 300 K$
Thus, the efficiency of the Carnot engine is $η = (1 - T_{c} / T_{h}) \times 100 = (1 - 300 / 900) \times 100 = 66.67$ % $\sim 67$ %

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The efficiency of a Carnot engine which operates between the two temperatures $T_{1} = 500 K a n d T_{2} = 300 K$ is:

Now Tony settles upon a Carnot engine. Calculate the efficiency of the Carnot engine if the temperature it operates between are 350 K and 250 K.

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T_{2} = 300 K

The efficiency of a Carnot engine which operates between the two temperatures $T_{1} = 500 K a n d T_{2} = 300 K$ is:

100 K

500 K

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900 K

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