Electrical Machines
No load test on induction motor is conducted to find which of the following losses?

 Rotational loss
 Stator core loss
All of these
 Stator copper loss

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Electrical Machines
Which of the following statements is/are correct statements?

 EMF per turn in both the windings are equal
 EMF per turn in HV winding is more than EMF per turn in LV winding
 EMF per turn in HV winding is less than EMF per turn in LV winding
All of these

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Electrical Machines
The 3 - Φ induction motors are, by a very considerable margin, the most widely used AC motors as

  they are capable of operation under range of leading and lagging pf.
  they have maximum efficiency and maximum starting torque.
  these are cheaper in cost, simple and rugged in construction.
  they have very good speed regulation.

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