# electrical power

## Complete detail of Electric Vehicle

Electric Vehicle All electric vehicles (EVs), also known as battery electric vehicle, use a battery pack to conserve the power of the engine. EV batteries are charged by connecting the vehicle to a power source. While electricity generation may contribute to air pollution, as per the U.S. The Environmental Protection Agency all electric vehicles are …

## Electrical switches and types

Electrical switching with mechanical or relay contacts. These types of switches can control a wide range of current options and voltage. Electrical switches can adapt to misunderstandings in the application / application to ensure no leakage current and make them available in multiple circuits, actuators, and housing styles. Disadvantages include their number, limited communication life …

## What is capacitance? How to measure.

The property of the capacitor is called as capacitance. The ability of a capacitor to store energy is measured by capacitance. It is defined as the ratio between the charge stored Q by a capacitor to the voltage V across the terminal. The capacitance is denoted as “C”. Capacitance can be mathematically expressed by Also, …

## What is battery?

What is battery? A battery, in a sense, can be any device that stores energy in the form of chemical energy. At the same time the battery converts electrical energy into chemical energy during charging and chemical energy into electrical energy during discharge. The common use of the term “battery,” however, is limited to the …

## Coulombs Law of electrical charge

Coulomb’s law, or Coulomb’s inverse-square law is a law of physics that describes force interacting between static electrically charged particles. Consider two positive charges q1 and q2, separated by a distance r. the force interaction between the charges is directionally proportional to the magnitude of charges and the inversely proportional to the square of the …

## Three Phase Power

It is found that generation of three phase power is more economical than generation of single phase power. In three phase electric power system, the three voltage and current waveform are 120o offset in time in each cycle of power. That means; each voltage waveform has phase difference of 120o to other voltage waveform and …

## Single Phase Power

Single phase power refers to the distribution system in which; all the voltages vary in unison. It can be generated simply by rotating a moving coil in a magnetic field or by moving field around a stationary coil. The alternating voltage and alternating current so produced, thus referred to as single phase voltage and current. …

## Active Power & Reactive power

Let us consider a single phase power circuit in which current lags behind the voltage by an angle φ.Let the instantaneous electric potential difference v = Vm.sinωtThen the instantaneous current can be expressed as i = Im. sin(ωt – φ).Where, Vm and Im are the maximum values of sinusoidally varying electric potential difference and current …

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