In a two phase cylindrical rotor synchronous machine, the mutual

in-a-two-phase-cylindrical-rotor-synchronous-machine-the-mutual

In a two phase cylindrical rotor synchronous machine, the mutual inductance Mαβ between α phase and β phase winding is __________

A. Mmax

B. 0

C. Mmin

D. any of the mentioned

I have been asked this question in homework.

I need to ask this question from Elementary Synchronous Machines in chapter Basic Concepts in Rotating Machines of Electrical Machines

The correct option is B. 0

Explanation: Since the axes of phase α and phase β windings are normal to each other and air gap is uniform, the mutual inductance Mαβ between α,β winding is zero.