Consider the provided question.The alternating current generator produces a current given by the equationI=50sin 120π (t-0.001) To find the smallest positive t such that I=40 ampere, put I=40 in the above equation and solve for the value of t. This is explained below: Consider the prov...
On top of that, the field generated by an alternating current interacts with the ground more strongly than it does with the air. 高空架线的话,由交流电产生的电磁场与地面的感应要比空中的电场交互作用强大得多。 article.yeeyan.org 2. Such a simple generator as we have been describing produces ...
【题目】In an electrical alternating current cir-cuit th e impedan c e Z is given by$$ Z = \sqrt { \left[ R ^ { 2 } + ( \omeg a L - \fr a c { 1 } { \omeg a C } ) ^ { 2 } \right] } . T r a n s p o s e $$th e formul a to mak e C th e ...
aTo work with an alternating current power source, conventional LED controllers would require a power adaptor as a transformer, which increases the cost and limits the usage of LEDs. 要与交变电流电源一起使用,常规LED控制器将要求力量适配器作为变压器,增加费用并且限制LEDs用法。 [translate] ...
Alternating current (AC) is the type of electricity that's most commonly used in homes and businesses. Unlike direct current (DC)...
12.4 shows a solenoid with an alternating current ( a.c) supply coiled around a soft iron core. An aluminium ring is placed through the soft iron and rests on the solenoid. When the a. c supply is turned on, the ring 'floats' above the solenoid as shown in Fig. 12.5.Soft iron ...
An Alternating Current Bridge for Comparing Four-Terminal-Pair Impedances at ω= 104 rad/s 来自 Semantic Scholar 喜欢 0 阅读量: 56 作者: R Hanke 摘要: s. It is proved that the uncertainty, particularly in the measurement of capacitances and resistances, can be considerably reduced, because ...
39 An alternating current flows through coil P. Coil Q is connected to a C.R.O. on which a sinusoidal trace appears. What happens to the trace if P and Q are linked by a soft-iron core?D oscilloscope PQ height number of cycles Aremains the same increases Bremains the same remains ...
2.4.2 Alternating Current Circuits, Alternating Current Power Electric circuits connected to AC power supplies typically contain different kinds of components, which, according to their electric behavior, can be classified as resistors, inductors, and capacitors. If an AC flows through a pure resistor...
SummAry An alternating current (AC) heating method for lithium-ion batteries is proposed in the paper. Effects of current frequency, amplitudes and waveforms on the temperature evolution and battery performance degradation are respectively investigated. First, a thermal model is established to depict the...