Kleenton official quiz test

In a semiconductor, the carriers of the current at room temperature are

• Electrons only

• Electron and holes

• Holes only

• Electrons and ions

Pure silicon can be converted to a p type material by adding a controlled amount of

• Pentavalent atom

• Trivalent atom

• Hexavalent atoms

• Tetrevalent atom

In a pure semiconductor, the number of electron in the conduction band is

• Equal to the number of holes in the valence band

• Greater than the number of holes in the valence band

• Less than the number of holes in the valence band

• Twice the number of holes in the valence band

The major difference between metals ,semiconductor and insulators is the issue of

• Ionic bond

• Covalent bond

• Band gap

• Bond gap

In a semiconductor junction diodes, the depletion or barrier layer is forward biased , the layer

• Widen

• Narrow

• Remain constant

• Widen and narrow

If a reverse biased voltage is applied to a p-n Junction the depletion layer width is

• Increased

• Decreased

• Constant

• Halved

The p-n Junction diodes can act as a rectifier because they

• Conduct current in both direction

• Block current when forward biased

• Conduct current when reverse biased

• Conduct current when in forward baised

Zener diode is used for

• Current amplification

• Power amplification

• Voltage regulations

• Energy conversion

A p-n Junction diode is used as

• A rectifier in a d.c circuit

• An amplifier in an a.c circuit

• A rectifier in an a.c circuit

• An amplifier in a d.c circuit

The battery connection that permits current to flow across a p-n Junction is called

• Forward Baised

• Amplification

• Rectification

• Reversed baised