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FCC T5A - 电路与电学原理

FCC 题库总览 > T级 (入门级 Technician) > T5 电路与电学原理 > T5A

小节 T5A:电路与电学原理

本小节共包含 11 道中英双语精校考题
#T5A01🔗
Electrical current is measured in which of the following units?
电流以下列哪个单位测量?
A
Volts
伏特
B
Watts
瓦数
C
Ohms
欧姆
D
Amperes
安培
✓ 正确答案
#T5A02🔗
Electrical power is measured in which of the following units?
电功率是用以下哪个单位测量的?
A
Volts
伏特
B
Watts
瓦数
✓ 正确答案
C
Watt-hours
瓦时
D
Amperes
安培
#T5A03🔗
What is the term for the flow of electrons in an electric circuit?
电路中电子流动的术语是什么?
A
Voltage
电压
B
Amperes per second
安培每秒
C
Volts per second
伏特每秒
D
Current
当前的
✓ 正确答案
#T5A04🔗
What term describes the number of times per second that an alternating current makes a complete cycle?
什么术语描述了交流电每秒完成一个完整周期的次数?
A
Pulse rate
脉率
B
Wave number
波数
C
Frequency
频率
✓ 正确答案
D
Wavelength
波长
#T5A05🔗
A difference in which of the following causes electron flow?
以下哪项差异会导致电子流动?
A
Voltage
电压
✓ 正确答案
B
Ampere-hours
安时
C
Capacitance
电容
D
Inductance
电感
#T5A06🔗
What is the unit of frequency?
频率的单位是什么?
A
Hertz
赫兹
✓ 正确答案
B
Henry
亨利
C
Farad
一匹马
D
Epicycles per second
每秒本轮
#T5A07🔗
Why are metals generally good conductors of electricity?
为什么金属通常是良好的电导体?
A
They have relatively high density
它们具有相对较高的密度
B
They have many free electrons
它们有很多自由电子
✓ 正确答案
C
They have many free protons
他们有很多自由质子
D
They have relatively high Young’s modulus values
它们具有相对较高的杨氏模量值
#T5A08🔗
Which of the following is a good electrical insulator?
以下哪项是良好的电绝缘体?
A
Sea water
海水
B
Glass
玻璃
✓ 正确答案
C
Stainless steel
不锈钢
D
Graphite
石墨
#T5A09🔗
Which of the following describes alternating current?
以下哪项描述了交流电?
A
Current that alternates between a positive direction and zero
在正方向和零方向之间交替的电流
B
Current that alternates between a negative direction and zero
在负方向和零方向之间交替的电流
C
Current that alternates between positive and negative directions
正负方向交替的电流
✓ 正确答案
D
All these answers are correct
所有这些答案都是正确的
#T5A10🔗
Which term describes the rate at which electrical energy is used?
哪个术语描述了电能的使用率?
A
Resistance
反抗
B
Current
当前的
C
Power
功率
✓ 正确答案
D
Voltage
电压
#T5A11🔗
What type of current flow is opposed by resistance?
什么类型的电流与电阻相反?
A
Direct current
直流电
B
Alternating current
交流电
C
RF current
射频电流
D
All these choices are correct
这些选项都是正确的
✓ 正确答案
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