Quiz On Material Science - Magnetic Materials - 1

 

Quiz On Material Science - Magnetic Materials - 1

Hello everyone most welcome on my blog. Today in this post I will discuss about a new and interesting quiz competition. This is an online quiz competition on "Material Science and Magnetic Materials". In this quiz competition everyone can participate .There is no any registration fee. There is no any negative marketing. There is no any time limit for this quiz competition. All the questions are asked in this quiz related to electrical engineering. After quiz completion everyone will receive a participation certificate on your email id.

About the Quiz

Organized by: Sinhgad Institute of Technology & Science

Free Registration

Free E-Certificate will be provided to the participants who scoring 60% or above.
Who Can Attempt the Quiz: Faculty Members, UG & PG Students and School Students.

Here You can sell all the questions which are asked in this quiz competition

1. Diamagnetic substance are those having a permeability

more than free space

less than free space

equal to free space

much greater than free space

2. Paramagnetic substance is those having permeability.

more than free space

less than free space

equal to free space

much greater than free space

3. Ferromagnetic substances are those which have a permeability

Greater than that of free space.

Considerably greater than that of free space.

Less than that of free space.

Considerably lesser than that of free space.

4. In ferromagnetic materials

the atomic magnetic moments are anti parallel and unequal

the atomic magnetic moments are parallel

the constituents is iron only

One of the constituent is iron.

5. When the atomic magnetic moments are randomly oriented in a solid its magnetic behavior is termed as

anti-ferromagnetic

paramagnetic

ferromagnetic

Diamagnetic

6. The intensity of magnetization, M, of a ferro magnetic solid

increases with increasing temperature

is independent of temperature

decreases with increasing temperature

Depends on method of heating.

7. When a ferromagnetic substance is magnetized small changes in dimensions occur. Such a phenomenon is known as

magnetostriction

magnetic hysteresis

magnetic expansion

magneto-calorisation

8. Magnetic recording tape is most commonly made from

ferric-oxide

silicon-iron

small particles of iron

iron-dust

9. Soft magnetic materials are have

Large area of hysteresis loop

Medium area of hysteresis loop

Small area of hysteresis loop

None of these

10. In case of ferrites dielectric constant is order of

10 to 12

0 to 5

5 to10

None of these

11. Magnetic susceptibility in diamagnetic material is

Neutral

Negative

Positive

Zero

12. Soft magnetic material is

Steel

Copper

Bismuth

Iron`

13. Interaction between neighboring dipoles is equal in ___ material

Ferrimagnetic

Ferromagnetic

Antiferromagnetic

Paramagnetic

14. A soft magnetic material is having

High hysteresis loss

Copper loss

Low hysteresis loss

None of these

15. Which of the following material will be suitable for an electromagnet

Steel

Copper

Aluminum

Soft iron

16. The direction of induced current in a conductor moving in a magnetic field can be predicted by applying

Fleming’s left hand rule

Fleming’s right hand rule

Faraday’s law

Maxwell’s screw rule

17. Ferrites show

Diamagnetism

Ferromagnetism

Both(a) & (b)

Not (a) & (b)

18. For making light weight permanent magnet ____ are used

Hard ferrites

Soft ferrites

Ferromagnetic

Both (a) & (b)

19. The major cause of hum in transformer is due to

Electromagnetic

Magnetostriction

Electrostriction

None of these

20. It is easier to magnetize ___ sheet steel

Stainless

Cast Iron

Grain oriented

Non grain Oriented

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