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Electrical Engineering Materials - Interview Questions and Answers

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76. The forbidden gap in an insulator is
A. large
B. small
C. nil
D. any of the above
Explanation:
77. The carbon percentage is least in
A. low carbon steel
B. wrought iron
C. cast iron
D. malleable iron
Explanation:
78. Mercury as an electric contact material is
A. a liquid
B. a metal
C. a metal liquid
D. a gas
Explanation:
79. For germanium the forbidden energy gap is
A. 0.15 eV
B. 0.25 eV
C. 0.5eV
D. 0.7eV
Explanation:
80. Superconducting metal in super conducting state has relative permeability of
A. zero
B. one
C. negative
D. more than one
Explanation:
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