FNEx1

What is the meaning of rectification?

• a process of removing voltage fluctuations using a capacitor

• a process of adding impurities to pure materials

• a process of converting an alternating current into a pulsating direct current.

Doping of Semiconductors

• materials which can conduct electricity better than insulator, but not as well as conductors.

• The process of adding specific impurities in the pure semiconductor.

• 4 electrons staying in the outermost orbit.

• changing the ac voltage to become dc.

A semiconductor diode is used as

• in Oscillators

• an amplifier

• a rectifier

• a modulator

Select the correct application of forward bias.

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Materials which can conduct electricity better than insulator,but not as well as conductors. This is the definition of

• diode

• semiconductor

• conductor

• insulator

• superconductor

This is a graph that is seen on an oscilloscope. How is it changed after full-wave rectification?

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A semiconductor material that is the product of the doping process is called ___.

• extrinsic material

• intrinsic material

• donor material

• acceptor material

How are n-type materials created?

• by introducing pentavalent impurity elements

• by introducing trivalent impurity elements

• by introducing tetravalent impurity elements

• by introducing hexavalent impurity elements

In an n-type material the ___ is called the majority carrier and the ____ the minority carrier.

• electron, hole

• hole, electron

• electron, electron

• hole, hole

In a p-type material the ___ is called the minority carrier and the ____ the majority carrier.

• electron, hole

• hole, electron

• electron, electron

• hole, hole