The higher the frequency, the size of transformer will be [Larger or Smaller] | Transformer MCQ

The higher the frequency, the ______ the size of the transformer will be:

  1. Smaller
  2. Larger
  3. Any of the above

Correct answer: 1. Smaller

The transformer size is inversely related to the frequency.

In each cycle of alternating current, the electrical energy is converted to magnetic and then back. At higher frequency, these cycles occur more often. (At 60 Hz it will occur faster than 50 Hz). Thus at 60 Hz, a transformer can transform more faster.

So if we want to transformer same parameters we can design a comparatively smaller transformer at 60 Hz than at 50 Hz.

More MCQ on Transformer:

  1. The chemical used in breather of transformer is
  2. The current transformers that are used to protect power transformer with star-delta connection against the earth and phase faults should be connected in which configuration
  3. The efficiency of a transformer will be maximum at which of following conditions
  4. The mechanical vibrations of the transformer’s laminations depend on
  5. The No-load current of Transformer is usually what percent of its full load
  6. The pick-up current of a 100/5 transformer having a current setting of 200% will be
  7. The transformer core is laminated in order to reduce

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