What is the term for the time required for the capacitor in an RC circuit to be charged to 63.2% of the applied voltage or to discharge to 36.8% of its initial voltage?
RC 电路中的电容器充电至所施加电压的 63.2% 或放电至其初始电压的 36.8% 所需的时间是什么术语？
AAn exponential rate of one
指数速率为一
COne exponential period
一个指数周期
DA time factor of one
时间因子为一
What letter is commonly used to represent susceptance?
How is impedance in polar form converted to an equivalent admittance?
极坐标形式的阻抗如何转换为等效导纳？
ATake the reciprocal of the angle and change the sign of the magnitude
取角度的倒数并改变大小的符号
BTake the reciprocal of the magnitude and change the sign of the angle
取大小的倒数并改变角度的符号
CTake the square root of the magnitude and add 180 degrees to the angle
取大小的平方根并将角度加上 180 度
DSquare the magnitude and subtract 90 degrees from the angle
计算大小的平方并用角度减去 90 度
What is the time constant of a circuit having two 220-microfarad capacitors and two 1-megohm resistors, all in parallel?
具有两个 220 微法拉电容器和两个 1 兆欧电阻器并联的电路的时间常数是多少？
What is the effect on the magnitude of pure reactance when it is converted to susceptance?
当纯电抗转换为电纳时，对纯电抗的大小有何影响？
CIt is shifted by 90 degrees
它移动了90度
DIt is replaced by its reciprocal
它被它的倒数取代
What is susceptance?
什么是电纳？
AThe magnetic impedance of a circuit
电路的磁阻抗
BThe ratio of magnetic field to electric field
磁场与电场之比
CThe imaginary part of admittance
导纳的虚部
DA measure of the efficiency of a transformer
变压器效率的衡量标准
What is the phase angle between the voltage across and the current through a series RLC circuit if XC is 500 ohms, R is 1 kilohm, and XL is 250 ohms?
如果 XC 为 500 欧姆、R 为 1 kΩ、XL 为 250 欧姆，则串联 RLC 电路两端的电压和通过的电流之间的相位角是多少？
A68.2 degrees with the voltage leading the current
电压超前电流68.2度
B14.0 degrees with the voltage leading the current
14.0度，电压超前电流
C14.0 degrees with the voltage lagging the current
14.0度，电压滞后电流
D68.2 degrees with the voltage lagging the current
68.2度，电压滞后电流
What is the phase angle between the voltage across and the current through a series RLC circuit if XC is 300 ohms, R is 100 ohms, and XL is 100 ohms?
如果 XC 为 300 欧姆、R 为 100 欧姆、XL 为 100 欧姆，则串联 RLC 电路两端的电压和流过的电流之间的相位角是多少？
A63 degrees with the voltage lagging the current
63度，电压滞后电流
B63 degrees with the voltage leading the current
电压超前电流63度
C27 degrees with the voltage leading the current
电压超前电流27度
D27 degrees with the voltage lagging the current
27度，电压滞后电流
What is the relationship between the AC current through a capacitor and the voltage across a capacitor?
通过电容器的交流电流与电容器两端的电压之间有什么关系？
AVoltage and current are in phase
电压和电流同相
BVoltage and current are 180 degrees out of phase
电压和电流异相 180 度
CVoltage leads current by 90 degrees
电压超前电流 90 度
DCurrent leads voltage by 90 degrees
电流超前电压90度
What is the relationship between the AC current through an inductor and the voltage across an inductor?
通过电感器的交流电流与电感器两端的电压之间有什么关系？
AVoltage leads current by 90 degrees
电压超前电流 90 度
BCurrent leads voltage by 90 degrees
电流超前电压90度
CVoltage and current are 180 degrees out of phase
电压和电流异相 180 度
DVoltage and current are in phase
电压和电流同相
What is the phase angle between the voltage across and the current through a series RLC circuit if XC is 25 ohms, R is 100 ohms, and XL is 75 ohms?
如果 XC 为 25 欧姆、R 为 100 欧姆、XL 为 75 欧姆，则串联 RLC 电路两端的电压和流过的电流之间的相位角是多少？
A27 degrees with the voltage lagging the current
27度，电压滞后电流
B27 degrees with the voltage leading the current
电压超前电流27度
C63 degrees with the voltage lagging the current
63度，电压滞后电流
D63 degrees with the voltage leading the current
电压超前电流63度
What is admittance?
什么是准入？
AThe inverse of impedance
阻抗的倒数
BThe term for the gain of a field effect transistor
场效应晶体管增益的术语
CThe inverse of reactance
电抗的倒数
DThe term for the on-impedance of a field effect transistor
场效应晶体管的导通阻抗术语
