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

Discussion

The standard capacitor used in Schering's bridge is

  • A.an electrolytic capacitor chosen for the large capacitance it offers in a small volume
  • B.a variable air capacitor whose value is adjusted to obtain the magnitude balance
  • C.a gas-filled or vacuum type of very low loss
  • D.a paper-insulated capacitor of the same construction as the specimen being tested

Answer: C

The dissipation factor of the specimen is measured against that of the standard, so the standard must have a loss so small as to be negligible. Compressed gas capacitors achieve loss tangents of a few parts in a million and hold their value at high voltage.

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

Post your comment

Please log in or register to post a comment.