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Autotransformers: Step up, Step Down, Boost, and Buck for the CBT Power PE Exam 2022

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  • เผยแพร่เมื่อ 9 ก.พ. 2022
  • Learn how to solve step-down autotransformer problems on the Power PE Exam even though the Reference Handbook is missing information on this topic!
    Table of Contents:
    1:11 - Step up autotransformer (Boost)
    2:23 - Turns ratio (N1:N2) for step-up autotransformer
    4:31 - Primary (IL) vs secondary (IH) current for step-up autotransformer
    5:24 - Step up autotransformer current relationships and KCL
    7:01 - Step down autotransformer (Buck)
    7:26 - Turns ratio (N1:N2) for step down autotransformer
    9:19 - Step down autotransformer current relationships and KCL
    11:19 - Common current (IC) for both step up and step down autotransformer
    12:30 - Input-output power formulas (SIO)
    16:15 - Winding power formulas (Sw)
    20:58 - Transformer turns ratio formula
    23:16 - Set up autotransformer turns ratio formula
    26:03 - Set down autotransformer turns ratio formula
    Watch out!
    The NCEES® Reference Handbook does not include reference material for the step-down autotransformer.
    Instead, it only includes material for the step-up autotransformer.
    Are you confident that you'll be able to answer step-down autotransformer questions on the PE exam without formulas or a circuit diagram?
    This is a short video taken from the February 2022 Transformers Live Class to show you exactly how to solve step-down autotransformer problems, even though the Reference Handbook does not include any information on it.
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ความคิดเห็น • 6

  • @electricalpereview
    @electricalpereview  2 ปีที่แล้ว

    Table of Contents:
    1:11 - Step up autotransformer (Boost)
    2:23 - Turns ratio (N1:N2) for step up autotransformer
    4:31 - Primary (IL) vs secondary (IH) current for step up autotransformer
    5:24 - Step up autotransformer current relationships and KCL
    7:01 - Step down autotransformer (Buck)
    7:26 - Turns ratio (N1:N2) for step down autotransformer
    9:19 - Step down autotransformer current relationships and KCL
    11:19 - Common current (IC) for both step up and step down autotransformer
    12:30 - Input output power formulas (SIO)
    16:15 - Winding power formulas (Sw)
    20:58 - Transformer turns ratio formula
    23:16 - Set up autotransformer turns ratio formula
    26:03 - Set down autotransformer turns ratio formula

  • @Danilo111
    @Danilo111 ปีที่แล้ว +1

    I'm taking my test in a week, we'll see how it goes, but I want to say thank you for this excellent videos and for being such an excellent teacher. I'll make sure to recommend your videos to everybody.

    • @electricalpereview
      @electricalpereview  ปีที่แล้ว

      Thanks for the kind words Daniel. Go get 'em next week!

  • @kaihannoman
    @kaihannoman 2 ปีที่แล้ว +1

    I know this thing but still it is always good to refresh the knowledge and your video is the best of all to refresh the memory

  • @ibrahimelsharkawy1617
    @ibrahimelsharkawy1617 2 ปีที่แล้ว

    GREAT JOB