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Applied Physics 1: Engineering Materials And Applications
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Applied Physics 1: Engineering Materials And Applications
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25 Questions

1. The frequency for electronic polarization lies in which region of the electromagnetic spectrum?
2. Example for para-magnetic materials 
3. In 7 segment display, how many LEDs are used?
4. H2O is a polar dielectric.
5. Magnetic permeability has units as 
6. The inductance is the measure of
7. Magnetic permeability has units as 
8. The four types of polarization are Electronic Polarization, Ionic Polarization, Space-charge polarization and ______
9. What is the process of producing electric dipoles inside the dielectric by an external electric field?
10. Using Maxwell equation which of the following cannot be calculated directly?
11. Units for magnetic flux density 
12. Which of the following relation will hold good?
13. Electronic polarizability is dependent of temperature.
14. Which of the following breakdowns occur at a higher temperature?
15. Which of the following exhibits spontaneous magnetisation?
16. The dipole is least stable when the angle between the dipole and the field is _____________
17. Which of the following is a strong magnet?
18. When does a dielectric become a conductor?
19. The optical properties of liquid crystals depend on the direction of ___________
20. What is the material used in two port device?
21. When mobility increases, insulation resistance decreases and dielectric becomes conducting.
22. Example for soft magnet 
23. What is the backplane in LCD?
24. In which of the following increases and then decreases?
25. Find the total flux in a coil of magnetic flux density 12 units and area 7 units.

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