What are the advantages of rotating field system?

What are the advantages of rotating field system?
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Answer :

a. For rotating field alternators only two slip rings and brush gear assembly are required irrespective of number of phases. b. The DC excitation voltage is low and it is very easy to insulate. This intern reduces the size of the machine. c. Out put current can be taken directly from the fixed terminals on the stator. It is easy to insulate high voltage stationary stator (armature). d. The armature winding can be easily braced to prevent any deformation produced by the mechanical stress set as a result of short circuit current and the high centrifugal brought into play.
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Description : State advantages of rotating field type alternators. 

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Description : What does a Rotating magnetic field do?

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Description : What is the main advantage of the rotating field alternator?

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Description : Explain how in a 3 phase induction motor to a rotating magnetic field is developed. 

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Description : Define rotating magnetic field of an induction motor. 

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Description : Mention the advantages of field tests.

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Description : Which of the following statements is/are true? A. Torsional vibrations do not occur in a three rotor system, if rotors rotate in same direction B. Shaft vibrates with maximum frequency when rotors ... C. Zero node behavior is observed in rotors rotating in opposite direction D. All of the above

Last Answer : A. Torsional vibrations do not occur in a three rotor system, if rotors rotate in same direction

Which of the following statements is/are true? A) Torsional vibrations do not occur in a three rotor system, if rotors rotate in same direction B) Shaft vibrates with maximum frequency when rotors rotate in same direction C) Zero node behavior is observed in rotors rotating in opposite direction D) All of the above

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