The operation of a 3-phase synchronous motor operating on constant excitation across infinite bus will not be stable if power angle δ
A. exceeds intemal angle θ.
B. is less than θ.
C. exceeds θ/2.
D. is less than θ/2.
Answer:A
The operation of a 3-phase synchronous motor operating on constant excitation across infinite bus will not be stable if power angle δ
A. exceeds intemal angle θ. B. is less than θ. C. exceeds θ/2. D. is less than θ/2.