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Electrical Engineering Materials - Interview Questions and Answers

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16. The conductors have transport phenomena of electrons due to
A. electric field
B. magnetic field
C. electromagnetic field
D. none of the above
Explanation:
17. Which of the following resistive materials has the lowest temperature co-efficient of resistance ?
A. Nichrome
B. Constantan
C. Kanthal
D. Molybdenum
Explanation:
18. Superconductivity is observed for
A. infrared frequencies
B. d.c. and low frequency
C. a.c. and high frequency
D. frequencies having no effect
Explanation:
19. The coils of D.C. motor starter are wound with wire of
A. copper
B. kanthal
C. manganin
D. nichrome
Explanation:
20. Most of the common metals have _____ structure.
A. linear
B. hexagonal
C. orthorhombic
D. cubic
Explanation:
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