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Experiment 1-3
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... dissipated in the resistor ( P  V 2 / R ). Do not allow the power to exceed 250 mW . Next, reverse the polarity of the power supply connections and measure the diode current and voltage in the reverse direction. Again, do not allow the resistor power dissipation to exceed 250 mW . Plot the diode's ...
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Three-phase electric power



Three-phase electric power is a common method of alternating-current electric power generation, transmission, and distribution. It is a type of polyphase system and is the most common method used by electrical grids worldwide to transfer power. It is also used to power large motors and other heavy loads. A three-phase system is usually more economical than an equivalent single-phase or two-phase system at the same line to ground voltage because it uses less conductor material to transmit electrical power.The three-phase system was independently invented by Galileo Ferraris, Mikhail Dolivo-Dobrovolsky, Jonas Wenström and Nikola Tesla in the late 1880s.
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