induction motors question

Discussion in 'Homework Help' started by brady123, Jun 4, 2009.

  1. brady123

    Thread Starter New Member

    May 5, 2008
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    0
    What happens to both a squirrel cage and a rotor wound induction motor when they are loaded, with the various winding combinations?

    Thanks!:)
     
  2. R!f@@

    AAC Fanatic!

    Apr 2, 2009
    8,754
    760
    Define loaded?

    This topic is vast, buddy.

    *****

    Rifaa
     
  3. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
    For asynchronous motors, when they are loaded the slip increases and the current through them increases. Thus the output torque increases as to be able to drive the load and maintain the output speed constant. Of course, the output speed reduces slightly as the load increases as to produce the required torque. The reduction in speed is not much in a well designed motor.
    Synchronous motors change their slip but the speed remains constant.
     
  4. brady123

    Thread Starter New Member

    May 5, 2008
    7
    0
    The full question is as follows;

    1. Induction motors probabaly the most common motors that are used in industry.
    a) Compare the characteristics of a rotor wound induction motor, to a squirrel cage induction motor, giving examples of when both types may be required, and the reasons behind the use of the star/delta windings.
    b) What happens to each type of motor when it is loaded, with the various winding combinations?

    Thanks again!
    Stuart
     
  5. brady123

    Thread Starter New Member

    May 5, 2008
    7
    0
    thanks mik3!
     
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