FCC T6D - 电子元件与电路原理图

#T6D01🔗

Which of the following devices or circuits changes an alternating current into a varying direct current signal?

以下哪个设备或电路将交流电转换为变化的直流电信号？

Transformer

变压器

Rectifier

整流器

✓ 正确答案

Amplifier

放大器

Reflector

反光板

#T6D02🔗

What is a relay?

什么是继电器？

An electrically -controlled switch

电控开关_

✓ 正确答案

A current-controlled amplifier

电流控制放大器

An inverting amplifier

反相放大器

A pass transistor

传输晶体管

#T6D03🔗

Which of the following is a reason to use shielded wire?

以下哪项是使用屏蔽线的原因？

To decrease the resistance of DC power connections

降低直流电源连接的电阻

To increase the current carrying capability of the wire

增加导线的载流能力

To prevent coupling of unwanted signals to or from the wire

防止不需要的信号耦合到电线或从电线耦合

✓ 正确答案

To reduce receiver overload

减少接收器过载

#T6D04🔗

Which of the following displays an electrical quantity as a numeric value?

以下哪项将电量显示为数值？

Potentiometer

电位器

Transistor

三极管

Meter

仪表

✓ 正确答案

Relay

中继

#T6D05🔗

What type of circuit controls the amount of voltage from a power supply?

什么类型的电路控制电源的电压量？

Regulator

稳压器

✓ 正确答案

Oscillator

振荡器

Filter

筛选

Phase inverter

反相器

#T6D06🔗

What component changes 120 V AC power to a lower AC voltage for other uses?

什么元件将 120 V AC 电源转换为较低的 AC 电压以供其他用途？

Variable capacitor

可变电容

Transformer

变压器

✓ 正确答案

Transistor

三极管

Diode

二极管

#T6D07🔗

Which of the following is commonly used as a visual indicator?

以下哪一项通常用作视觉指示器？

LED

✓ 正确答案

FET

Zener diode

齐纳二极管

All these choices are correct

所有这些选项都是正确的

#T6D08🔗

Which of the following is combined with an inductor to make a resonant circuit?

下列哪项与电感结合构成谐振电路？

Resistor

电阻器

Zener diode

齐纳二极管

Potentiometer

电位器

Capacitor

电容器

✓ 正确答案

#T6D09🔗

What is the name of a device that combines several semiconductors and other components into one package?

将多个半导体和其他元件组合到一个封装中的设备的名称是什么？

Transducer

传感器

Multi-pole relay

多极继电器

Integrated circuit

集成电路 _

✓ 正确答案

Transformer

变压器

#T6D10🔗

What is the function of component 2 in figure T-1?

图 T-1中的元件2的作用是什么？

Give off light when current flows through it

当电流流过时发光

Supply electrical energy

供应电能

Control the flow of current

控制电流的流动

✓ 正确答案

Convert electrical energy into radio waves

将电能转化为无线电波

#T6D11🔗

Which of the following is a resonant or tuned circuit?

以下哪项是谐振或调谐电路？

An inductor and a capacitor in series or parallel

串联或并联的电感器和电容器

✓ 正确答案

A linear voltage regulator

线性稳压器

A resistor circuit used for reducing standing wave ratio

一种降低驻波比的电阻电路

A circuit designed to provide high-fidelity audio

设计用于提供高保真音频的电路

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FCC T6D - 电子元件与电路原理图

小节 T6D：电子元件与电路原理图