ELECTRONICS 1 CHAPTER 3

Energy gap between Valence band and conduction band is termed as

• finite energy band

• kinetic energy band

• forbidden energy band

• gravitational energy band

Which band consist of free electronics in energy band diagram

• First band

• Second band

• third band

• Conduction band

In which type of material, the valance band and conduction band is overlapped in energy band diagram

• Insulators

• Conductors

• Semi conductors

• Super semiconductors

In which type of material, the valance band and conduction band is having a wide gap in energy band diagram

• Insulators

• Conductors

• Semi conductors

• All metals

How many valance electrons does semiconductor has

• 2

• 3

• 4

• 6

In which type of temperature co-efficient, When the temperature increases resistance will get decrease

• Negative temperature co-efficient

• Positive temperature co-efficient

• No co-efficient change

• Ideal co-efficient

In which type of temperature co-efficient, When the temperature increases resistance will get increase

• Negative temperature co-efficient

• Positive temperature co-efficient

• No co-efficient change

• Ideal co-efficient

Which type of temperature co-efficient does the pure semiconductor falls

• Negative temperature co-efficient

• Positive temperature co-efficient

• No co-efficient change

• Ideal co-efficient

Which semiconductor is most commonly used

• Germanium

• Carbon

• Sulfur

• Silicon

A semiconductor in its purest form is called as

• Insulator

• Super Conductor

• Intrinsic semiconductor

• Extrinsic semiconductor