ENGINEERING MATERIALS IN EE QUIZ

Materials which lack permanent magnetic dipoles are called

dia-magnetic.

None of these

ferro-magnectic.

semi-magnetic.

TRUE ANSWER : ?
YOUR ANSWER : ?

Maximum number of electrons in a sub-shell with l = 3 and n = 4 is

20.

14.

8.

10.

TRUE ANSWER : ?
YOUR ANSWER : ?

How many valence electrons would be found in an atom with the atomic number of 51?

8.

51.

5.

none of above.

TRUE ANSWER : ?
YOUR ANSWER : ?

The core of a transformer for microwave frequency should be made of

silicon.

iron.

ferrites.

silicon carbide.

TRUE ANSWER : ?
YOUR ANSWER : ?

Susceptibility is negative for

none of above.

non magnetic substances.

ferromagnetic substances.

diamagnetic substances.

TRUE ANSWER : ?
YOUR ANSWER : ?

Substance having permeability less than the permeability of free space, are known as

bipolar.

diamagnetic.

ferromagnetic.

paramagnetic.

TRUE ANSWER : ?
YOUR ANSWER : ?

Dielectric constant for vacuum is

1.

infinity.

100.

0.

TRUE ANSWER : ?
YOUR ANSWER : ?

The electron configuration of copper is

none of above.

1s2 , 2s2 2p6, 3s2 3p6 3d10, 4s1.

1s2 , 2s2 2p6, 3s2 3p6 3d9, 4s2.

1s2 , 2s2 2p6, 3s2 3p6 3d8, 4s1 4p

TRUE ANSWER : ?
YOUR ANSWER : ?

The numberof atoms per unit cell in a B.C.C structure is

4.

12.

7.

2.

TRUE ANSWER : ?
YOUR ANSWER : ?

Almost the entire mass of an atom is concentrated in the

nucleus.

neutrons.

protons.

electrons.

TRUE ANSWER : ?
YOUR ANSWER : ?

↑