; Ulus Mah. Çanakkale Asfaltı Üzeri No.131 Menemen/İzmir.

1. the fact of being able to act or produce something with a minimum of waste, expense, or unnecessary effort.
Efficiency is a key component of a successful business.
2. the ratio of the energy delivered by a machine to the energy supplied for its operation.
Mechanical efficiency _ propeller efficiency
thermal efficiency the efficiency of conversion of fuel energy to kinetic energy