Engineering Materials

What is the highest frequency ferrite?

Which material is used for Schottky barrier diodes, LED, Gunn diodes and injection lasers?

What material is used for electroluminescent diodes which can emit either green or red light?

Lead compounds such as lead sulfide, selenide, and telluride may be used for which application?

For hardness penetration test, the Rockwell test uses what type of penetrator?

What is the combination of cutting and scratch test of a material?

What refers to the strain energy per unit volume required to reach the yield point?

The ff are typical properties of ceramics except:

What refers to the average number of mers in the molecule, typically several hundred to several thousand?

What nickel alloy has high electrical and corrosion resistance and high strength at red heat temperature and contain 15 to 20 % chromium?

Silicon bronze contains how many percent of silicon?

What element is added to copper to make it extremely hard?

What element constitutes the major component of most bronzes?

The element that is practically insoluble in solid copper is known as

Steels that are used for axles, gears and similar parts requiring medium to high hardness and high strength are known as

The purpose of copper in steels alloying is to increase

Galvanized steel are steel products coated with ____.

Cables for 220 kV line are invariably?

What group of steels are high-carbon, high-chromium tools steels suitable for cold working applications?

The one from which iron is obtained is