Question

A synchronous motor operates at unity power factor. The points to the right of the unity power factor locus of V-curves corresponds to

• A. over excitation and lagging current input.
• B. under excitation and leading current input.
• C. under excitation and lagging current input.
• D. over excitation and leading current input.

Answer 1

The correct option is D over excitation and leading current input.


$\therefore$ As we go right of the unity power factor locus of V-curve we obtain over excitation and leading current input.