need help.ac/dc

Discussion in 'Homework Help' started by alsy, Mar 18, 2014.

  1. alsy

    Thread Starter New Member

    Mar 18, 2014
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    have spent a good while trying online trying to find a direct answer to the 2 below

    which one of the following types of motor can use ac or dc
    single phase universal
    single phase split phase
    dc series
    dc brushless

    a suitable type of motor to drive a 20kw load at almost a constant speed is a
    3 phase induction
    single phase
    dc series
    dc brushless

    if anyone has any charts or good links that can help also would be appreciated.tks
     
  2. studiot

    AAC Fanatic!

    Nov 9, 2007
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  3. alsy

    Thread Starter New Member

    Mar 18, 2014
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    thanks for reply.
    that article doesnt mention single or split phase so im none the wiser

    the second one id say is dc
     
  4. studiot

    AAC Fanatic!

    Nov 9, 2007
    5,005
    513
    Firstly welcome to AAC

    Have you read this thread about homework help?

    http://forum.allaboutcircuits.com/showthread.php?t=3002

    I would add to this always read the question carefully.

    1) Why do you think two types are called DC motors?
    My google search has writ large in the first entry an answer to this one.
    If you think they wanted you to check every motor type then have you googled the rest? Formally checking ech type in turn will inform you about each type. Is that not a good thing?

    2) I also asked for your reason.
    What are the powers of typical electric motors you have come across?
    How does that compare with the one in the question?
    What sort of power supply does that mean it needs, would it, for instance run off batteries?
     
  5. alsy

    Thread Starter New Member

    Mar 18, 2014
    3
    0
    direct current
     
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