Français
1. Motors and energy sources. Power quality
The first principle of thermodynamics , applied to a cyclic transformation (W + Q = 0), expresses the impossibility of building machines capable of supplying work without borrowing energy from the external environment. It is based, in particular, on the notion of equivalence between mechanical and thermal energy. However, experience shows that heat is not a form of energy that is in any way analogous to the others.
The Ultimate Scientific and Technical Reference
This article is included in
Physics of energy
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
Motors and energy sources. Power quality
Intensive and extensive variables. Entropy
Bibliography
The Ultimate Scientific and Technical Reference
