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Answer :
The efficiency of the engine is 0.138 %.
Efficiency is the amount of labor or energy that is saved throughout a process. Work or energy is lost in numerous processes, for instance, waste heat or vibration. Energy output divided by energy intake, represented as a percentage, is the efficiency. 100% efficiency would be the mark of a perfect process.
Any heat engine that intakes energy as heat (from, say, consuming fuel) equal to
[tex][Q_H] = 97.4 kJ[/tex]
Exhausts (or discards) energy as heat = [tex][Q_L]= 84.0kJ[/tex]
The values of efficiency ε ;
ε = 1 - [tex]| \frac{Q_L}{Q_H} |[/tex]
ε = [tex]1 - | \frac{84}{97.4} |[/tex]
ε = 1 - 0.862
ε = 0.138 %
Therefore, the efficiency of the engine is 0.138%.
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Final answer:
The efficiency of a heat engine is calculated by dividing the work done by the engine by the heat absorbed. In this case, the efficiency can be found by dividing the heat exhausted by the heat absorbed.
Explanation:
The efficiency of a heat engine is a measure of how well it converts heat energy into useful work. It is calculated by dividing the work done by the engine by the heat absorbed from the heat source.
To find the efficiency of the engine, use the formula:
Efficiency = (Work done by the engine / Heat absorbed by the engine) x 100%
In this case, the heat absorbed is given as 97.4 kJ and the heat exhausted is given as 84.0 kJ. Plug these values into the formula:
Efficiency = (84.0 kJ / 97.4 kJ) x 100%
Calculate the efficiency to find the answer.
