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SSC JE 2017:Electrical Materials Rankers Quiz 6

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Question 1

Elements can reach a stable atomic structure by

Question 2

What is the packing fraction of a BCC (body-centered cubic) unit cell?

Question 3

The following material is not used for making a piezoelectric transducer

Question 4

Consider the following statements:
Piezoelectric materials
1) Crystal can be shown aselectrical equivalent circuit similar to an inductor and a capacitor (Tank circuit).
2) Quartz, Rochelle salt, tourmaline.
3) Used in voltage stabilizers.
4) This exhibits the reverse effect electrostriction.
Which of these statements are correct?

Question 5

When a ferromagnetic substance is magnetized, ther ar small changes in dimensions.The phenomenon is called

Question 6

Match List-I with List-II and select the correct answer using the code given below the lists:
A) No eddy current loss
B) Small hysteresis loss
C) Large hysteresis loss
1) Ferrimagnetic material
2) Soft magnetic material
3) Hard magnetic material
4) non-ferrous material

Question 7

The current flow in a semiconductor is due to
1) Drift current
2) Displacement current
3) Diffusion current

Question 8

Orientational polarization is

Question 9

High permittivity ceramic is used for capacitors of 

Question 10

Which effect is the converse of Peltier effect?
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