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  2. Mathematics of three-phase electric power - Wikipedia

    en.wikipedia.org/wiki/Mathematics_of_three-phase...

    Such arrays will evenly balance the polyphase load between the phases of the source system. For example, balanced two-phase power can be obtained from a three-phase network by using two specially constructed transformers, with taps at 50% and 86.6% of the primary voltage. This Scott T connection produces a true two-phase system with 90° time ...

  3. Polyphase system - Wikipedia

    en.wikipedia.org/wiki/Polyphase_system

    A two-phase supply with 90 degrees between phases can be derived from a three-phase system using a Scott-connected transformer, which can also produce three-phase power from a two-phase input. A polyphase system must provide a defined direction of phase rotation, so mirror image voltages do not count towards the phase order. A 3-wire system ...

  4. Three-phase electric power - Wikipedia

    en.wikipedia.org/wiki/Three-phase_electric_power

    Three-phase transformer with four-wire output for 208Y/120 volt service: one wire for neutral, others for A, B and C phases. Three-phase electric power (abbreviated 3ϕ [1]) is a common type of alternating current (AC) used in electricity generation, transmission, and distribution. [2]

  5. US senators vow action after briefing on Chinese Salt Typhoon ...

    www.aol.com/news/us-agencies-brief-senators...

    WASHINGTON (Reuters) -U.S. government agencies held a classified briefing for all senators on Wednesday on China's alleged efforts known as Salt Typhoon to burrow deep into American ...

  6. Who is Choi Sang-mok, South Korea's second acting ... - AOL

    www.aol.com/news/choi-sang-mok-south-koreas...

    Finance Minister Choi Sang-mok became on Friday South Korea's second acting president in two weeks, as lawmakers voted to impeach the current acting leader, Prime Minister Han Duck-soo, fuelling ...

  7. Phase diagram - Wikipedia

    en.wikipedia.org/wiki/Phase_diagram

    A phase diagram for a binary system displaying a eutectic point. Other much more complex types of phase diagrams can be constructed, particularly when more than one pure component is present. In that case, concentration becomes an important variable. Phase diagrams with more than two dimensions can be constructed that show the effect of more ...

  8. College football bowl game rankings: The 35 postseason ...

    www.aol.com/college-football-bowl-game-rankings...

    Date, time, TV: Dec. 27, 3:30 p.m. ET, ESPN. Location: Birmingham, Ala. There’s a lot to like about this pairing of teams that enjoyed being playoff spoilers at various points during the season.

  9. Linear transformation in rotating electrical machines - Wikipedia

    en.wikipedia.org/wiki/Linear_transformation_in...

    Transformation of three phase electrical quantities to two phase quantities is a usual practice to simplify analysis of three phase electrical circuits. Polyphase a.c machines can be represented by an equivalent two phase model provided the rotating polyphases winding in rotor and the stationary polyphase windings in stator can be expressed in a fictitious two axes coils.