Electronics

Maxwell Nemir · 26問 · 1年前

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The distance a wave penetrates into a conductor before being completely absorbed is called

Skin depth

The gate voltage that must be applied to a field effect transistor for it to conduct current is called the

Threshold voltage

The main problem with the half-wave rectifier is

- It only uses the positive half cycle of the AC line voltage

The two types of transistors are the bipolar and the

field effect

The four key components of a wireless transmitter are oscillator, amplifier, antenna and

- Modulator

The frequency of an electromagnetic wave is expressed in units called

- Hertz

The piece of equipment that minimizes the “peaks and valleys” seen in the rectifiers output is the

- Transformer

Another way to smooth the DC output voltage of the rectifier is to add a

Half-wave buffer

The most widely used semiconductor material used in solid state electronic device is

Silicon

Solid state devices can fail due to

- Manufacturing defects

The advantages of transistors over vacuum tubes include size, cost, efficiency, reliability and

- ease of manufacturing

There are three key functions of logic circuits, these are to make decisions, preform math and

store information

The component of a DC power supply that convert AC to DC is the:

rectifier

A passive device that consists of two conductors separated by an insulator is a

Capacitor

What is the approximate built-in voltage,in mV, in silicone diodes

- 700

The drawback of a center-tap rectifier is that it requires a

center-tap transformer

The “dead zone” at the top of an antenna where the antenna does not transmit EM waves is called

- Null

The conductivity of a semiconductor can be easily modified through a process called

- Doping

In a receiver, the information signal is separated from the carrier frequency by the

Detector

The binary number system is referred to as a base -__ number system

- 2

The four key components of a DC power supply are transformer, rectifier, filter and

Tap changer

A diode only allows current to flow in one direction which makes them useful in

- determining break down voltages of electronic equipment?

The full wave length rectifier requires a total of _ diodes.

- 4

A diode will no longer block current and will start to conduct current when its breakdown voltage is exceeded by the

- reverse bias voltage

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