Semiconductor Concepts Quiz

In what way is the atomic structure of all pure semiconductor crystals similar?

• They all have a diamond cubic structure.

• They all have a hexagonal structure.

• They all have a face-centered cubic structure.

• They all have a body-centered cubic structure.

What is the most common semiconducting material used in making electronic components?

• Silicon

• Germanium

• Gallium Arsenide

• Silicon Carbide

What is the sharing of outer-orbit electrons in semiconducting materials called?

• Ionic bonding

• Covalent bonding

• Metallic bonding

• Hydrogen bonding

What effect does this have on the resistance of the semiconductor?

• Increases the resistance

• Decreases the resistance

• No effect on the resistance

• Varies the resistance randomly

Which process is involved in forming an N-type semiconductor material?

• Doping with pentavalent impurities

• Doping with trivalent impurities

• Heating the material to high temperatures

• Applying an electric field

Explain the process involved in forming a P-type semiconductor material.

• By adding trivalent impurities to a pure semiconductor

• By adding pentavalent impurities to a pure semiconductor

• By increasing the temperature of the semiconductor

• By applying an external electric field

In what way is current conducted through an N-type material?

• By the movement of electrons

• By the movement of holes

• By the movement of both electrons and holes

• By the movement of ions

In what way is current conducted through a P-type material?

• By the movement of electrons

• By the movement of holes

• By the movement of both electrons and holes

• By the movement of ions

Compare the way forward and reverse bias affect the depletion region and the conduction of a PN-junction diode.

• Forward bias reduces the depletion region and allows current to flow, while reverse bias increases the depletion region and prevents current flow.

• Forward bias increases the depletion region and prevents current flow, while reverse bias reduces the depletion region and allows current to flow.

• Both forward and reverse bias reduce the depletion region and allow current to flow.

• Both forward and reverse bias increase the depletion region and prevent current flow.

What determines whether a diode is forward or reverse biased?

• The direction of the current flow

• The type of semiconductor material

• The polarity of the voltage applied

• The temperature of the diode