Education

SCADA – Supervisory Control and Data Acquisition

Education, Electrical /
SCADA

Functions of SCADA (Supervisory Control and Data Acquisition) The supervisory control and data acquisition systems allow a few operators to monitor the generator. The following are the functions of SCADA. 1. Data Acquisition : It provides telemetered measurements and status information to operator. 2. Information display (limit violations, unplanned events). 3. Supervisory control (CBs (Circuit

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Radiographic Inspection Advantages and Limitation

Education, Mechanical /
Radiographic Inspection

Radiographic Inspection Radiography (X-ray) is an NDT method used to radiographic inspection material and components using the concept of differential adsorption of penetrating radiation. Each specimen under evaluation will have differences in density, thickness, shapes, sizes or absorption characteristics. Thus, the different amount of radiation is absorbed. The unabsorbed radiation that passes through the part

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Liquid Penetrant Inspection or Dye Penetrant Inspection

Education, Mechanical /
Liquid Penetrant Inspection

Liquid Penetrant Inspection Liquid penetrant inspection is used on nonporous metal and nonmetal components to find material discontinuities that are open to the surface and may not be evident to normal visual inspection. The dye penetrant method is frequently used for the detection of surface breaking flaws in non-ferromagnetic materials. The basic purpose of penetrant

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Radio Over Fiber Links – Optical Fiber Communications

Education, Electrical /
Radio over fiber

Radio over Fiber Links One application of RF radio over fiber technology is in broadband wireless access networks for interconnecting antenna base stations (BSs) with the central controlling office. Image shows the basic network architecture for such a scheme. Here a collection of antenna base stations provide wireless connectivity to subscribers by means of millimeter-wave

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Analog Link in Optical Communication

Communications, Education /
Analog Link

Analog Link In telecommunication networks the trend has been to analog link telephone exchanges with digital circuits. A major reason for this was the introduction of digital integrated-circuit technology which offered a reliable and economic method of transmitting both voice and data signals. Since the initial applications of fiber optics were to telecommunication networks, its

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Reactive Power and Voltage Control – Power System Operation

Education, Electrical /
Reactive Power and Voltage Control

A power system is said to be well designed if it gives a good quality of reliable supply. Voltage level maintained within reasonable limits is referred as good quality. If reactive power and voltage control variation is more than specified value, the performance of equipment suffers and also the life of equipment is sacrificed. When

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