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Archive - December 2021

Flywheel storage system
  • Electrical

Mechanical Energy Storage – Flywheels, Pumped Storage, Compressed Air

December 31, 2021
by Santhakumar Raja
11 min read
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Flywheels : Mechanical energy may be stored in the form of kinetic or potential energy. A flywheel, in essence, is a mechanical battery simply mass rotating about an axis. Although the use of the flywheel as a kinetic energy...

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Electrochemical Energy Storage
  • Electrical

Electrochemical Energy Storage – theteche.com

December 28, 2021
by Santhakumar Raja
8 min read
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Batteries : The most traditional of all energy storage for power system is the electrochemical energy storage (EES). The major classification can be made in three categories. They are primary batteries, secondary batteries, and...

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  • Electrical

Solar Photovoltaic : Technologies and Applications

December 27, 2021
by Santhakumar Raja
17 min read
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Solar electric or PV systems convert some of the energy in sunlight directly into electricity. PV cells are made primarily of silicon, the second most abundant element in the earth’s crust and the same semiconductor material...

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Typical automated feeder circuit loop
  • Electrical

Automated Feeder Switching Systems – theteche.com

December 26, 2021
by Santhakumar Raja
8 min read
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The method known as SCADA has long been used to control transmission systems, providing the operational flexibility and speed required for efficient and reliable performance. The use of SCADA in the distribution system is...

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Schematic of typical 3-pole arrangement. Two poles have been deleted to clarify mechanical drive train arrangement
  • Electrical

History of Circuit Switcher Development

December 26, 2021
by Santhakumar Raja
2 min read
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After World War II, the drive to electrify the remaining rural and sparsely populated areas of the United States was renewed. Providing fully rated circuit breakers for switching loaded circuits was frequently beyond budget...

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Electric Energy Sources
  • Electrical

Electric Energy Sources and Representations

December 25, 2021
by Santhakumar Raja
2 min read
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Sources : In circuit analysis, the goal is to start with a connected set of circuit elements such as resistors, capacitors, operational amplifiers, and other devices, and to find the voltages across and currents through each...

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Electric charges
  • Electrical

Electric Circuit and Magnetic Circuits – theteche.com

December 25, 2021
by Santhakumar Raja
3 min read
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Definition of Electric Circuit : An electric circuit is a collection of electrical devices and components connected together for the purpose of processing information or energy in electrical form. An electric circuit may be...

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Geostationary Earth Orbit
  • Communications

Geostationary Earth Orbit (GEO) – theteche.com

December 24, 2021
by Santhakumar Raja
3 min read
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GEO is also called as geosynchronous (or synchronous) orbits, which has 24 hour period of revolution but are inclined with respect to equator. Orbits that are below a mean altitude of about 36,000 km have periods of revolution...

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Satellite Earth Station Block Diagram
  • Communications

Satellite Earth Station Block Diagram

December 24, 2021
by Santhakumar Raja
3 min read
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The communication is established to the satellite through earth station. The earth station can be located on the ship at the sea, or it can be located on the space craft or actually on the earth. The location of the earth station...

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Antenna Beams
  • Communications

Frequency Re-use by Dual Polarization

December 24, 2021
by Santhakumar Raja
6 min read
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We know that the satellite can receive and transmit one of the bands given in Table For each band, the uplink and downlink frequencies are separate. Frequency division multiplexing of the complete uplink and downlink range of...

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  • Gram Negative Cell Wall Gram Positive and Gram Negative Cell Wall
    by Santhakumar Raja
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    by Santhakumar Raja
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December 2021
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