Instrumentation Engineering Materials Test 2

Ferrites are

The relative permeability of a paramagnetic substance is

Hall effect may be used for which of the following?

Manganin is an alloy of

Eddy current loss is proportional to the

A pure semiconductor under ordinary conditions behaves like

In p-type semiconductor the majority carriers are

Copper is completely miscible with

For germanium the forbidden gap is

The dielectric strength of transformer oil should be

Resistivity of conductors is most affected by

Copper constantan is used for measuring temperature upto

Mica is a

The conductivity of copper is less than that of silver by

A ferrite core has less eddy current loss than an iron core because ferrites have

Transformer cores are laminated with

For silicon the forbidden gap is

Plastics are

In order to obtain p-type germanium it should be doped with a

Barrier potential in a P-N junction is caused by

The heating elements of electric irons are made of

The most malleable, ductile low resistivity material is

The percentage of carbon in mild steel is

Aluminium is

Hard ferrites are used for making