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Semiconductor Devices
Contributed by: Howes
  • 1. What is a diode used for in a circuit?
A) Acts as a switch
B) Allows current to flow in one direction
C) Amplifies the signal
D) Regulates voltage
  • 2. Which material is typically used as the intrinsic semiconductor in a P-N junction diode?
A) Silicon
B) Gold
C) Aluminum
D) Copper
  • 3. What is the function of a transistor?
A) Store electrical charge
B) Amplify or switch electronic signals
C) Convert light into electricity
D) Regulate current
  • 4. Which type of semiconductor material has fewer free electrons than holes?
A) Intrinsic
B) P-type
C) Extrinsic
D) N-type
  • 5. What is the most common type of field-effect transistor?
A) JFET (Junction Field-Effect Transistor)
B) MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor)
C) BJT (Bipolar Junction Transistor)
D) IGBT (Insulated Gate Bipolar Transistor)
  • 6. What is the purpose of a rectifier circuit?
A) Generate oscillations
B) Convert AC to DC
C) Amplify weak signals
D) Filter noise from signal
  • 7. Which type of diode is used to regulate voltage and protect circuits from overvoltage?
A) Light-emitting diode
B) Schottky diode
C) Zener diode
D) Tunnel diode
  • 8. What is the function of a varactor diode?
A) High-power rectification
B) Temperature sensing
C) Voltage-controlled capacitance
D) Voltage amplification
  • 9. What does a P-N junction diode exhibit in the forward bias condition?
A) Increases voltage
B) High resistance
C) Low resistance
D) Acts as an open switch
  • 10. Which of the following is a common application of a diode?
A) Rectification
B) Signal amplification
C) Voltage regulation
D) Data storage
  • 11. What type of semiconductor material has excess free electrons?
A) N-type
B) P-type
C) Extrinsic
D) Intrinsic
  • 12. What is the primary function of a photodiode?
A) Convert light into electrical current
B) Detect magnetic fields
C) Regulate voltage
D) Amplify weak signals
  • 13. What is the main function of a zener diode?
A) Filtering noise
B) Voltage regulation
C) Power amplification
D) Signal modulation
  • 14. Which diode is known for its very low forward voltage drop?
A) LED
B) Varactor diode
C) Zener diode
D) Schottky diode
  • 15. What does the acronym LED stand for?
A) Longitudinal Energy Diode
B) Linear Energy Detector
C) Light-Emitting Diode
D) Low-Energy Device
  • 16. What is the primary function of a tunnel diode?
A) Temperature sensing
B) Voltage regulation
C) Low-power rectification
D) High-speed switching
  • 17. Which type of diode exhibits a negative resistance characteristic?
A) Zener diode
B) Photodiode
C) Tunnel diode
D) Schottky diode
  • 18. What is a semiconductor device?
A) A device that emits light when exposed to electricity.
B) A device made from a material with semiconductor properties.
C) A device that works only in the presence of a magnet.
D) A device used for underwater communication.
  • 19. Which semiconductor device can store charge and be used in memory circuits?
A) Zener diode
B) Resistor
C) Inductor
D) Capacitor
  • 20. What is a common application of a silicon-controlled rectifier (SCR)?
A) Signal modulation.
B) Audio amplification.
C) Motor control.
D) Voltage rectification.
  • 21. Which semiconductor device is commonly used as a surge protector?
A) Transistor
B) SCR
C) Varistor
D) Capacitor
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