Semiconductors

Q. What is the role of a semiconductor in a transistor?
  • A. To store charge
  • B. To amplify current
  • C. To insulate
  • D. To generate heat
Q. What is the role of a transistor in electronic circuits?
  • A. Switching
  • B. Amplification
  • C. Signal modulation
  • D. All of the above
Q. What is the role of temperature in the behavior of semiconductors?
  • A. It has no effect
  • B. It decreases conductivity
  • C. It increases the number of charge carriers
  • D. It only affects p-type semiconductors
Q. What is the typical band gap of germanium?
  • A. 0.66 eV
  • B. 1.1 eV
  • C. 1.5 eV
  • D. 2.0 eV
Q. What is the typical range of energy band gaps for semiconductors?
  • A. 0.1 - 0.5 eV
  • B. 0.5 - 1.5 eV
  • C. 1.5 - 3.0 eV
  • D. 3.0 - 5.0 eV
Q. What is the typical range of the energy band gap for semiconductors?
  • A. 0.1 - 0.5 eV
  • B. 0.5 - 2.5 eV
  • C. 2.5 - 5 eV
  • D. 5 - 10 eV
Q. What type of semiconductor behavior is exhibited by a material with a very small band gap?
  • A. Insulator
  • B. Conductor
  • C. Superconductor
  • D. Semiconductor
Q. What type of semiconductor is formed when silicon is doped with phosphorus?
  • A. p-type
  • B. n-type
  • C. Intrinsic
  • D. Superconductor
Q. Which device utilizes the p-n junction principle?
  • A. Resistor
  • B. Capacitor
  • C. Diode
  • D. Inductor
Q. Which of the following describes the behavior of a Zener diode?
  • A. Acts as a regular diode
  • B. Allows current to flow in both directions
  • C. Maintains a constant voltage
  • D. Has no breakdown voltage
Q. Which of the following devices is based on the principle of semiconductors?
  • A. Transformer
  • B. Capacitor
  • C. Transistor
  • D. Inductor
Q. Which of the following is a characteristic of intrinsic semiconductors?
  • A. High conductivity
  • B. Temperature-dependent conductivity
  • C. Presence of impurities
  • D. Permanent charge carriers
Q. Which of the following materials is commonly used as a p-type semiconductor?
  • A. Silicon
  • B. Germanium
  • C. Gallium Arsenide
  • D. Boron-doped Silicon
Q. Which of the following materials is commonly used as a semiconductor?
  • A. Copper
  • B. Silicon
  • C. Aluminum
  • D. Iron
Q. Which type of semiconductor has an excess of electrons?
  • A. P-type
  • B. N-type
  • C. Intrinsic
  • D. Extrinsic
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