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Question 1

Which of the following is/are property of Ferrites?

(1) Low resistivity

(2) High curie temperature

(3) Low permeability

(4) High dielectric constant

Question 2

A conducting material should be

Question 3

Heat conduction in a semiconductor takes place

Question 4

The spontaneous magnetization is the most important characteristic of

Question 5

Statement (I): Hard magnetic materials are used for making electromagnets.

Statement (II): Hard magnetic materials have high coercive field.

Question 6

Nichrome is an alloy of

Question 7

The Temperature at which iron ceases to be ferromagnetic and becomes para-magnetic is

Question 8

Consider the following statements:
In an n-type semiconductor
1) Fermi level lies below the donor level at room temperature(T).
2) Fermi level lies above the donor level as T0.
3) Fermi level lies in valence band.
4) Fermi level remains invariant with temperature.
Which of these statements is/are correct?

Question 9

Thermal conductivity ______ and Entropy _____ in superconducting state.

Question 10

Schottky defect is observed in crystal when: -
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Feb 14AE & JE Exams