FCC E6F - 电路元件与半导体

#E6F01🔗

What absorbs the energy from light falling on a photovoltaic cell?

什么吸收落在光伏电池上的光的能量？

Protons

质子

Photons

光子

Electrons

电子

✓ 正确答案

Holes

洞

#E6F02🔗

What happens to photoconductive material when light shines on it?

当光照射到光电导材料上时，它会发生什么？

Resistance decreases

阻力降低

✓ 正确答案

Resistance increases

阻力增加

Reflectivity increases

反射率增加

Reflectivity decreases

反射率降低

#E6F03🔗

What is the most common configuration of an optoisolator or optocoupler?

光隔离器或光耦合器最常见的配置是什么？

A lens and a photomultiplier

透镜和光电倍增管

A frequency-modulated helium-neon laser

调频氦氖激光器

An amplitude-modulated helium-neon laser

调幅氦氖激光器

An LED and a phototransistor

一个 LED 和一个光电晶体管

✓ 正确答案

#E6F04🔗

What is the photovoltaic effect?

什么是光伏效应？

The conversion of voltage to current when exposed to light

暴露在光下时电压转换为电流

The conversion of light to electrical energy

光能到电能的转换

✓ 正确答案

The effect that causes a photodiode to emit light when a voltage is applied

施加电压时使光电二极管发光的效应

The effect that causes a phototransistor’s beta to decrease when exposed to light

暴露在光线下时导致光电晶体管的贝塔值降低的效应

#E6F05🔗

Which of the following describes an optical shaft encoder?

以下哪项描述了光轴编码器？

A device that detects rotation by interrupting a light source with a patterned wheel

一种通过带有图案的轮子中断光源来检测旋转的装置

✓ 正确答案

A device that measures the strength of a beam of light using analog-to-digital conversion

使用模数转换来测量光束强度的设备

An optical computing device in which light is coupled between devices by fiber optics

一种光学计算设备，其中光通过光纤在设备之间耦合

A device for generating RTTY signals by means of a rotating light source

一种利用旋转光源产生RTTY信号的装置

#E6F06🔗

Which of these materials is most commonly used to create photoconductive devices?

以下哪种材料最常用于制造光电导器件？

Polyphenol acetate

多酚醋酸酯

Argon

氩气

Crystalline semiconductor

晶体半导体

✓ 正确答案

All these choices are correct

所有这些选项都是正确的

#E6F07🔗

What is a solid-state relay?

什么是固态继电器？

A relay that uses transistors to drive the relay coil

使用晶体管驱动继电器线圈的继电器

A device that uses semiconductors to implement the functions of an electromechanical relay

使用半导体实现机电继电器功能的装置

✓ 正确答案

A mechanical relay that latches in the on or off state each time it is pulsed

每次发出脉冲时都会锁定在开或关状态的机械继电器

A semiconductor switch that uses a monostable multivibrator circuit

使用单稳态多谐振荡器电路的半导体开关

#E6F08🔗

Why are optoisolators often used in conjunction with solid-state circuits that control 120 VAC circuits?

为什么光隔离器经常与控制 120VAC 电路的固态电路结合使用？

Optoisolators provide a low-impedance link between a control circuit and a power circuit

光隔离器在控制电路和电源电路之间提供低阻抗链路

Optoisolators provide impedance matching between the control circuit and power circuit

光隔离器提供控制电路和电源电路之间的阻抗匹配

Optoisolators provide an electrical isolation between a control circuit and the circuit being switched

光隔离器在控制电路和被切换电路之间提供电气隔离

✓ 正确答案

Optoisolators eliminate the effects of reflected light in the control circuit

光隔离器消除控制电路中反射光的影响

#E6F09🔗

What is the efficiency of a photovoltaic cell?

光伏电池的效率是多少？

The output RF power divided by the input DC power

输出射频功率除以输入直流功率

The output in lumens divided by the input power in watts

输出（流明）除以输入功率（瓦）

The open-circuit voltage divided by the short-circuit current under full illumination

全光照下的开路电压除以短路电流

The relative fraction of light that is converted to current

转换为电流的光的相对比例

✓ 正确答案

#E6F10🔗

What is the most common material used in power-generating photovoltaic cells?

发电光伏电池最常用的材料是什么？

Selenium

硒

Silicon

硅

✓ 正确答案

Cadmium sulfide

硫化镉

Indium arsenide

砷化铟

#E6F11🔗

What is the approximate open-circuit voltage produced by a fully illuminated silicon photovoltaic cell?

完全发光的硅光伏电池产生的开路电压大约是多少？

0.5 volts

0.5伏

✓ 正确答案

0.7 volts

0.7伏

1.1 volts

1.1伏

1.5 volts

1.5伏

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FCC E6F - 电路元件与半导体

小节 E6F：电路元件与半导体