Answer
No, heat Engine can't have 100% proficiency as it abuses Kelvin-Planck articulation of second law of thermodynamic, according to Kelvin-Planck explanation net measure of work can't be created by trading heat with single store i.e. there should be another repository to dismiss heat. henceforth 100 % productivity isn't conceivable
Work Step by Step
No, heat Engine can't have 100% proficiency as it abuses Kelvin-Planck articulation of second law of thermodynamic, according to Kelvin-Planck explanation net measure of work can't be created by trading heat with single store i.e. there should be another repository to dismiss heat. henceforth 100 % productivity isn't conceivable