Electrical Machines
In case of DC shunt motor if load is reduced

  The speed will remains almost constant.
 DC Shunt Motor
 The speed will increase in proportion to reduction in load.
 The speed will increase abruptly.

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Electrical Machines
In the 3-phase induction motor, the resultant flux is of a constant nature and is

 equal to φm, where φm is the maximum flux due to any phase
 3/2 times maximum value of flux due to any phase
 3 times maximum value of flux due to any phase
 1/2 times maximum value of flux due to any phase

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