A synchronous machine with its field winding on stator and polyphase – McqOptions

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1.	A synchronous machine with its field winding on stator and polyphase armature winding on rotor. At steady state, which of the following is not true for its air gap field?
A.	stationary w.r.t. stator
B.	rotating at double the speed Ns w.r.t. rotor
C.	rotating in direction opposite to rotor
D.	rotating at Ns w.r.t. rotor
Answer» E.

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