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Electricity has been around since the existence of this universe, even when life on this planet does not exist. Very strong lightning bolts can light up the sky. Lightning is a natural phenomenon that indicates the existence of electrical energy. In line with the development of life, electricity became a very important part in human life. Almost all equipment used ...

The system operator of the motor performed at the start, running and Stop. The success of an operation of an electric motor is not only determined to “Running Performance” motor, but is also determined by the “Starting Performance”. Selection of starting method is much influenced by several factors such as the capacity of the motor / purposes of starting current, ...

The variable resistor is a resistor that can change the value of the unit Ohm his manner twirling players lever or screw that moves the sliding contact / sweeper (wiper) contained in the resistor. See Figure 11. Figure 11. Variable Resistors The variable resistor has a lever players usually called potentiometer (potentiometer), and which has a screw regulator called preset ...

VAR meter is used to measure the reactive power. VAR meter also has four terminals. For the measurement of reactive power meter then splicing the same as the wattmeter. Constant measuring scaled in units of VAR or KVAR. VAR meter commercially available in two types: for measurement in single-phase systems (has 4 terminals) and to the measurement of three-phase systems ...

a. Measuring Capacitors Capacitors are electronic components that are designed to be able to store and dispose of Unidirectional Voltage Power Lines (Direct Current Voltage / DCV). Capacitors are divided into two types. First, the capacitor has the anode (+) and negative (-). In the electronics technique called a polar capacitor (polarized capacitor). Second, the capacitor has no anode (+) ...

The hydrogen atom shows the simplest arrangement. Consisting of an electron and a proton (commonly called nuclei). Electrons as the smallest electric charge carriers is called the elementary charge. Elementary charge equal to the negative electron positive elementary charge of the proton. Therefore cargoes atoms have exactly the same effect. The atom is electrically neutral. Neutral atom consists of a ...