Semiconductors MCQ – Top 10 Basic Multiple Choice Questions on Semiconductors

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Semiconductors multiple-choice questions (MCQ). Electrical Engineering MCQ on fundamental concepts of semiconductors. Test your basic concepts on semiconductors theory.

Which of the following statement is correct about semi-conductors

Which of the following statement is correct about semi-conductors:

  1. In its intrinsic state, a semiconductor is a good insulator and a bad conductor
  2. In its intrinsic state, a semiconductor is neither a good insulator nor a good conductor
  3. In its intrinsic state, a semiconductor is a bad insulator and good conductor

Correct answer: 2. In its intrinsic state, a semiconductor is neither a good insulator nor a good conductor

Of mentioned elements which of following is a semiconductor

Of mentioned elements which of following is a semiconductor:

  1. Boron
  2. Copper
  3. Aluminum
  4. Silver

Correct answer: 1. Boron

The most popular and common semiconductor material is

The most popular and common semiconductor material is:

  1. Silicon
  2. Tellurium
  3. Polonium
  4. Germanium

Correct answer: 1. Silicon

What is the difference in energy between the valence band and the conduction band called

What is the difference in energy between the valence band and the conduction band called:

  1. Valence
  2. Space band
  3. Jump
  4. Energy gap

Correct answer: 4. Energy gap

Order of length of bandgap in insulators, semiconductors, and conductor

Which of the following is correct order of length of bandgap in insulators, semiconductors, and conductor:

  1. Semiconductors > Insulators > Conductors
  2. Conductors > Semiconductors > Insulators
  3. Insulators > Semiconductors > Conductors
  4. Conductors > Inuslators > Semiconductors

Correct answer: 3. Insulators > Semiconductors > Conductors

What is the number of valence electrons in Silicon

Number of valence electrons in Silicon are:

  1. One
  2. Two
  3. Three
  4. Four

Correct answer: 4. Four

What are Intrinsic crystals

Intrinsic crystals are those having:

  1. A few impurities
  2. Huge impurities
  3. No impurities

Correct answer: 3. No impurities

Semiconductors MCQ#8

________________ occurs when a conduction-band electron loses energy and falls back into a hole in the valence band:

  1. Recombination
  2. Bandgap
  3. Energy band

Correct answer: 1. Recombination

Which type of impurity items are added to form N-type semiconductors

To form N-type semiconductors which type of impurity items are added:

  1. Trialent
  2. Pentavalent

Correct answers: 2. Pentavalent

Which type of semiconductors have holes as the majority carriers

Holes are majority carriers in:

  1. N-type semiconductors
  2. P-type semiconductors

Correct answer: 2. P-type semiconductors

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