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

Discussion

The meter constant of an energy meter is expressed in

  • A.revolutions per minute at rated current and unity power factor
  • B.watts per revolution of the disc at the rated voltage of the meter
  • C.revolutions per kilowatt hour
  • D.kilowatt hours per revolution of the aluminium disc

Answer: C

It is marked on the nameplate as a figure such as 1200 rev/kWh, and dividing the revolutions counted by that figure gives the energy. The reciprocal is sometimes quoted as the disc constant in watt hours per revolution, but the usual marking is the first form.

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

Post your comment

Please log in or register to post a comment.