Alternator Multiple Choice Questions and Answers


1. Alternators are usually designed to generate


   A.Definite currents

   B.Definite power factor

   C.Variable frequencies

   D.Definite frequencies


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D.Definite frequencies

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2. In an alternator, the armature reaction will be completely magnetizing in case the load power factor is


   A.Zero lagging

   B.Zero leading

   C.0.866

   D.Unity


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B.Zero leading

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3. When the speed of an alternator increases


   A.The frequency decrease

   B.The frequency increases

   C.The frequency remains same

   D.The frequency changes


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B.The frequency increases

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4. In alternators the standrad practice, now a days is to have


   A.Rotating field

   B.Rotating armature

   C.Either of the above

   D.None of the above


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A.Rotating field

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5. In huge alternators, the moving part is


   A.Brushes

   B.Poles

   C.Armature

   D.None of the above


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B.Poles

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