Electrical Machines Questions and Answers
Rotating Magnetic Field – 1
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What is the amplitude of rotating MMF produced as a result of m-phase currents flowing in m-phase windings?
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The magnitude of rotating flux _____________ at all instants of time.
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The effect of poly phase currents in poly phase winding can be compared to _______________
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Which of the following statements are correct regarding individual phase MMF in rotating machines ?
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For a p-pole machine, which of the following statements are correct regarding the rotating field speed?
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The peak of rotating MMF wave (FR) is directed along which of the following axis?
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The speed at which rotating magnetic field revolves is called
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If F1 is the constant amplitude of fundamental rotating MMF wave, the space harmonics of order 6K+1 (where K=1,2,3….), the harmonic MMF wave is of _____________
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If the phase sequence of supply currents are reversed, then the direction of rotation of the resultant MMF wave will
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The amplitude of rotating MMF wave is proportional to
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Rotating Magnetic Field – 1
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