Electrical Machines
In a transformer

 both Oc and SC tests are conducted on HV side
 OC test is conducted on HV side and SC test is conducted on LV side
 both OC and SC tests are conducted on LV side
 OC test is conducted on LV side and SC test is conducted on HV side

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Electrical Machines
The damper windings also called the squirrel cage windings or damper grids

  are provided in a synchronous motor to make it self starting.
  are provided on the stator for improving power factor.
  consists of short-circuited copper bars embedded in the field pole faces.
  both (A) and (B).

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