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Where is the weekend quiz?

ebee
Easter Edition?
  • 0
    A 20kVA "ideal" single phase transformer has a turns ration of 44:1. If the primary winding has 4,000 turns and is connected to a 11kV, 50 Hz sinusoidal supply calculate for full load:


    a, The approximate values of primary and secondary currents.


    b, The maximum value of core flux.


    c. What are the effective losses in a practical transformer off load and on load. How do they occur?


    Z.
  • 0

    Zoomup:

    A 20kVA "ideal" single phase transformer has a turns ration of 44:1. If the primary winding has 4,000 turns and is connected to a 11kV, 50 Hz sinusoidal supply calculate for full load:

    a, The approximate values of primary and secondary currents.

    b, The maximum value of core flux.

    c. What are the effective losses in a practical transformer off load and on load. How do they occur?

     




    Reading the HP sauce bottles again? ? They were most informative, do they still do them? .

    https://edisontechcenter.org/AC-PowerHistory.html



    Jaymack
  • 0
    Do we get to know whether it`s a step up or step down transformer?
  • 0

    ebee:

    Do we get to know whether it`s a step up or step down transformer?




    O.k.  ebee, you want clues eh? .....................Answer (a) is less than 28.


    O.K. it is a step down transformer


    Z.

  • 0
    If the transformer questions are just toooooooooooo boring ebee, you could always work on "The Zero Theorem." It is a film on D.V.D. Well worth watching. Very engrossing.


    Z.
  • 0
    A/ I reckon the primary current to be 1.818rec Amps therefore secondary to be 80A.

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