Monday 21 October 2013

QUIZ OF THE WEEK -1

  1. Can 60 Hz transformer be operated at 50 Hz......?
  2. What is meant by Inrush current ?
  3. Is the inrush current use-full or useless?
Answers

1. Transformers rated at 60 Hz, should not be used on 50 Hz service due to higher losses and resultant heat rise.  However, any 50 Hz transformer will operate on 60 Hz service.

2.Maximum instantaneous input current drawn by an electrical device when the  first turned on of system 






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