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1. |
In a DC machine, z,p,Ia and a are respectively the number of conductors, number of poles, armature current and number of parallel paths. The peak value of fundamental component of armature MMF wave is ____________ |
A. | 8/Π[(z/2p)(I<sub>a</sub>/a)]. |
B. | 8/Π<sup>2</sup>[(z/p)(I<sub>a</sub>/a)]. |
C. | 4/Π[(z/2p)(I<sub>a</sub>/a)]. |
D. | 8/Π<sup>2</sup>[(z/p)(I<sub>a</sub>/a)]. |
Answer» E. | |