Semiconductor Electronics: Materials, Devices and Simple Circuits

Subject matter experts of JagranJosh have developed chapter wise practice questions of Class 12th as per the relevancy of the chapter in the CBSE board exam. This practice set contains 10 questions with detailed explanations on “Chapter: Semiconductor Electronics: Materials, Devices and Simple Circuits” of Physics.

  • Q1. Carbon, silicon and germanium have four valence electrons each. These are characterized by valence and conduction bands separated by energy band gap respectively equal to ( E g ) c , ( E g ) Si and ( E g ) Ge , Which of the following statements is true?

    Show Solution Report Error
    Please wait...
  • Q2.A p-n junction is fabricated from a semiconductor with band gap of 3.0 eV. The wavelength of the radiation which it can detect is

    Show Solution Report Error
    Please wait...
  • Q3. In a transistor connected in a common emitter mode  R c =4kΩ; I c =1mA and  I b =20μA then, the voltage gain is

    Show Solution Report Error
    Please wait...
  • Q4. The forbidden energy band gap in conductors, semiconductors and insulators are E G 1, E G 2  and  E G 3  respectively. The correct relation is:

    Show Solution Report Error
    Please wait...
  • Q5.In a common base circuit, the current gain is 0.96. If the base current is 60 μA, the emitter current and collector current

    Show Solution Report Error
    Please wait...
  • Q6. The input signal given o a CE amplifier having a voltage gain of 150 is  V i = 2 cos ( 15t+ 10 0 ). The corresponding output signal is

    Show Solution Report Error
    Please wait...
  • Q7.A common emitter amplifier is designed with n-p-n transistor . The input impedance is 1kΩ and load is 10KΩ . The voltage gain will be

    Show Solution Report Error
    Please wait...