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Electrical Materials SSC JE Quiz 1

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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

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 4

Consider the following statements
Magnetic susceptibility
1) depends on the nature of the magnetic material
2) is not dependent on the relative permeability of the medium
3) cannot be determined by measuring the force susceptibility depends on exerted on a magnetic material when placed in a magnetic field.
4) can be determined from M-H curve.
Which of these statements is/are correct ?

Question 5

Consider the following statements :
The coercive force can be increased by
1) Adding Cobalt because it is ferro-magnetic material.
2) Adding Gold because it is a diamagnetic material.
3) Adding Super alloy
4) Space charge polarizing
Which of the above statements is/are correct?
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