Electrical engineering material miscellaneous

Electrical engineering material miscellaneous

Easy Questions

Electrical Engineering materials

Electrical engineering material miscellaneous
  1. For a magnetic material when temperature is raised above Curie temperature, the material will become:








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    For a magnetic material when temperature is raised above Curie temperature, the material will become paramagnetic.

    Correct Option: B

    For a magnetic material when temperature is raised above Curie temperature, the material will become paramagnetic.

  1. When the temperature of a semiconductor is reduced to absolute zero?








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    When the temperature of a semiconductor is reduced to absolute zero all valence electrons remain in the valence bands.

    Correct Option: C

    When the temperature of a semiconductor is reduced to absolute zero all valence electrons remain in the valence bands.

  1. Silicon diodes are preferred to germanium diodes for high temperature operation because:








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    Silicon diodes are preferred to germanium diodes because the reverse saturation current of silicon diodes is smaller than that of germanium.

    Correct Option: C

    Silicon diodes are preferred to germanium diodes because the reverse saturation current of silicon diodes is smaller than that of germanium.

  1. Line insulators are made of:








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    Line insulators are made of porcelain.

    Correct Option: A

    Line insulators are made of porcelain.

  1. Dielectric loss is of the order of:








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    NA

    Correct Option: C

    NA