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DSSSB JE EE Material System Quiz 2

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Question 1

Consider the following statements about p-n junctions:
1) p-n junction behaves as a capacitor when forward biased.
2) p-n junction has p and n types semiconductors with depletion layer in between.
3) p-n junction has a wider depletion layer as compared to a Zener diode.
Which of these statements are correct?

Question 2

Ferrites have:

1) Low eddy current loss

2) High resistivity

3) Higher specific gravity than that of iron.

Which of the above statement is/are correct?

Question 3

Behaviourof conductors, semicondurctors and insulators is explained on the basis of

Question 4

The presence of one of the following materials,in iron or steel for use as a magnetic material, tends to reduce the hysteresis loss

Question 5

Consider the following statements:
In a Hall effect experiment, the sign of Hall voltage will change if
1) Direction of applied is changed.
2) Direction of applied mangnetic field is changed.
3) Direction of both applied electric and magnetic fields are changed.
4) Direction of current is changed.
Which of these statements is/are correct?

Question 6

In Face-Centred Cubic structure (FCC), what number of atoms is present in each unit cell?

Question 7

Which of the following is a characteristic of hard magnetic material?

Question 8

Defects in ionic crystals are:

Question 9

What is a material with equal, anti-parallel atomic magnetic moments, known as?

Question 10

Match List-Iwith List-II and select the correct answer using the code given below the lists:
A) Porcelain
B) Steatite
C) Mica
D) Rutile
1) Used for high frequency applications
2) Used in capacitors to be operated at high frequencies
3) Used for insulators
4) Releases water when heated
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Jun 30AE & JE Exams