Materials

Question 1

What metal is usually employed as a sacrificial anode for corrosion control purposes?

Answer 1

Zinc bar

Question 2

What is the relative dielectric constant for air?

Answer 2

1

Question 3

Which metal object may be least affected by galvanic corrosion when submerged in seawater?

Answer 3

Stainless steel propeller shaft

Question 4

Skin effect is a phenomenon where:

Answer 4

RF current flows in a thin layer of the conductor, closer to the surface, as frequency increases.

Question 5

Corrosion resulting from electric current flow between dissimilar metals is called:

Answer 5

Galvanic Corrosion

Question 6

Which of these will be most useful for insulation at UHF frequencies?

Answer 6

Mica