Electrical engineering material miscellaneous

Electrical engineering material miscellaneous

Easy Questions

Electrical Engineering materials

Electrical engineering material miscellaneous
  1. Eg of a semiconductor:








  1. View Hint View Answer Discuss in Forum

    Eg i.e. band gap of a semiconductor decreases with temperature.

    Correct Option: C

    Eg i.e. band gap of a semiconductor decreases with temperature.

  1. The charge of a hole is x C, where x is equal to:








  1. View Hint View Answer Discuss in Forum

    NA

    Correct Option: B

    NA

  1. As compared to metals, modulus of elasticity of plastics is usually:








  1. View Hint View Answer Discuss in Forum

    As compared to metals, modulus of elasticity of plastics is usually lesser.

    Correct Option: A

    As compared to metals, modulus of elasticity of plastics is usually lesser.

  1. The magnetic susceptibility of paramagnetic material is:








  1. View Hint View Answer Discuss in Forum

    Magnetic susceptibility is given by relation
    χm = µr – 1
    where χm = magnetic susceptibility
    µr = relative permeability
    We know that for a paramagnetic material µr is slightly greater than unity. Therefore, magnetic susceptibility of paramagnetic material is less than one but positive.

    Correct Option: B

    Magnetic susceptibility is given by relation
    χm = µr – 1
    where χm = magnetic susceptibility
    µr = relative permeability
    We know that for a paramagnetic material µr is slightly greater than unity. Therefore, magnetic susceptibility of paramagnetic material is less than one but positive.

  1. Interfacial polarisation of plastics increase their:








  1. View Hint View Answer Discuss in Forum

    Interfacial polarisation of plastic increase their permittivity.

    Correct Option: B

    Interfacial polarisation of plastic increase their permittivity.