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

Discussion

Measuring motor speed during an audit is worthwhile because the slip indicates

  • A.the condition of its bearings
  • B.how heavily the motor is loaded
  • C.the power factor at which it is running
  • D.the harmonic content of its supply current

Answer: B

An induction motor's slip is very nearly proportional to its load, so a machine running close to synchronous speed is lightly loaded and a candidate for replacement by a smaller one. It is the cheapest load estimate available where a clamp meter cannot reach.

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

Post your comment

Please log in or register to post a comment.