The magnetising current of a transformer is usually small because it has___________?
Correct answer: A. small air gap
- A. small air gap
- B. large leakage flux
- C. laminated silicon steel core
- D. fewer rotating parts
Explanation
A transformer core has a very small air gap and high permeability, so only a small magnetising current is needed to establish the flux. The laminated silicon-steel core mainly reduces core losses rather than explaining the small current by itself.
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