: The theory centers on the interaction between electrical quantities (voltage, current) and mechanical quantities (torque, speed) through coupled equations.

The book is famous (or infamous) for its heavy use of and matrix partitioning . Many engineers who own a physical copy keep it as a reference, not a textbook.

Students and professionals seeking the "New" PDF version of C.V. Jones' work are often looking for modern digital reprints that include:

The classic textbook " The Unified Theory of Electrical Machines