The efficiency of the machine will be 83 %.
A heat engine was developed that uses a cyclic process to convert heat energy into mechanical work.
The efficiency of the machine can be calculated by using the formula:
Efficiency = [tex]W_{0}[/tex] / [tex]W_{i}[/tex] × 100
It is given that, [tex]W_{0}[/tex] = 500×20 = 1000 J, [tex]W_{i}[/tex] = 1200 J.
Now, puts the value of given data in above formula.
Efficiency = (1000 j /12000 )×100
= 83.34 %
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