Electrical Machines
Which type of bearing is provided in small induction motors to support the rotor shaft?

  Bush bearings.
  Ball bearings.
  Cast iron bearings.
None of these

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Electrical Machines
If the frequency of input voltage of a transformer is increased keeping the magnitude of voltage unchanged, then

 Pe will increase but Ph will decrease
 Ph will increase but Pe will decrease
 Ph will decrease but Pe will remain same
 both hysteresis loss(Ph) and eddy current loss(Pe) will increase

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