Electrical Machines
In DC machine shape of armature MMF wave is?

 Triangular and directed towards brush axis.
 Triangular and directed towards main pole.
 Peaky in nature.
 Saddle shape.

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Electrical Machines
In a transformer

 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
 both Oc and SC tests are conducted on HV side

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