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

Discussion

Which caution applies to gapping a precious metal plug?

  • A.The plug must be gapped only with a wire gauge, since a feeler blade cannot enter the narrow gap of such a plug
  • B.The fine centre electrode is easily damaged
  • C.The gap must be set wider than for a conventional plug, which compensates for the smaller area of the electrode
  • D.No caution

Answer: B

Levering against the fine centre electrode snaps it off, so only the earth electrode is moved, and many such plugs are preset. Wire gauges genuinely are preferred for fine electrodes, which makes the last option sound advice. Working the distinction through on a single concrete case fixes it more firmly than any rule of thumb. Naming the cost of a choice alongside its benefit is what turns a fact into a design decision.

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

Post your comment

Please log in or register to post a comment.