Page No. 106
Which of the following materials does not have covalent bonds ?
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Super conductivity can be destroyed by_____________?
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Which of the following affect greatly the resistivity of electrical conductors ?
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Most of the common metals have _________ structure?
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Addition of 0.3 to 4.5% silicon to iron ________ the electrical resistivity of iron?
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Thermonic emission occurs in______________?
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A good electric contact material should have all of the following properties except_____________?
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_________ is an example of piezoelectric material?
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Piezoelectric materials serve as a source of ____________ ?
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