Q. 6 The angle 
in the swing equation of a synchronous generator is the
(A) angle between stator voltage and current
(B) angular displacement of the rotor with respect to the stator
(C) angular displacement of the stator mmf with respect to a synchronously rotating axis.
(D) angular displacement of an axis fixed to the rotor with respect to a synchronously rotating axis
Answer:(D)
Explanation:
