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Agniveer Air Force Semiconductor Electronics — practice questions

Explore 20 free Semiconductor Electronics questions in Agniveer Air Force Physics. Open each question or exercise to read its content, reference answers and available explanation.

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Semiconductor Electronics questions and exercises with answers

Showing questions 1–20 of 20.

The band holding the valence electrons is called the:Read the answer and worked solution →The band just above the valence band is the:Read the answer and worked solution →The energy separation between the two bands is called the:Read the answer and worked solution →Deliberate addition of an impurity to a semiconductor is called:Read the answer and worked solution →A doped semiconductor is described as:Read the answer and worked solution →In an intrinsic semiconductor, electrons and holes are:Read the answer and worked solution →Doping with a pentavalent atom gives which type?Read the answer and worked solution →Doping with a trivalent atom gives which type?Read the answer and worked solution →A pentavalent impurity is known as a:Read the answer and worked solution →A trivalent impurity is known as an:Read the answer and worked solution →In an n-type semiconductor, the majority carriers are:Read the answer and worked solution →In a p-type semiconductor, the majority carriers are:Read the answer and worked solution →One acceptor atom gives how many holes?Read the answer and worked solution →Conductivity of an intrinsic semiconductor depends on its:Read the answer and worked solution →A material with a band gap above three electron volts is an:Read the answer and worked solution →A material with a band gap below three electron volts is a:Read the answer and worked solution →A material behaves as a metal when the two bands:Read the answer and worked solution →In an n-type semiconductor, the minority carriers are:Read the answer and worked solution →A junction diode is described as a device with how many electrodes?Read the answer and worked solution →Holes exist as vacant levels created in the:Read the answer and worked solution →

Worked practice questions

The band holding the valence electrons is called the:

  1. Valence band
  2. Forbidden gap
  3. Impurity band
  4. Junction band
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Correct answer: A. Valence band

1. Electrons in a solid occupy allowed energy bands. 2. The outermost electrons of each atom fill one of them. 3. That is the valence band. 4. So the answer is valence band. _Source: syllabus Physics, Ch 14 'Semiconductor Electronics'_

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The band just above the valence band is the:

  1. Depletion layer
  2. Conduction band
  3. Forbidden region
  4. Impurity levels
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Correct answer: B. Conduction band

1. Free electrons need a band they can move in. 2. It lies immediately above the filled band. 3. That is the conduction band. 4. So the answer is conduction band. _Source: syllabus Physics, Ch 14 'Semiconductor Electronics'_

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The energy separation between the two bands is called the:

  1. Bias gap
  2. Base gap
  3. Band gap
  4. Bond gap
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Correct answer: C. Band gap

1. The two bands are usually separated by forbidden energies. 2. An electron must gain that much to cross. 3. The separation is called the energy band gap. 4. So the answer is band gap. _Source: syllabus Physics, Ch 14 'Semiconductor Electronics'_

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