Machine-translated by Google. Questions are authored in English.
Top

Discussion

An autotransformer should not be used where

  • A.electrical isolation between the circuits is required
  • B.the voltage ratio is close to unity
  • C.the saving in copper would be substantial
  • D.the two circuits share a common earth

Answer: A

Because a winding is common, a fault or a break in the common part can put the full input voltage on the output side. Safety isolation, and any application where the two systems must be earthed separately, calls for two windings.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.