Electrical Machines
If the field connection of a DC Shunt Motor is changed then

 motor will not run.
 it will run in same direction by slowly.
 it will run in opposite direction.
 it will run in same direction.

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Electrical Machines
No load primary current in a transformer

 leads the applied voltage by exactly 90Â&
 lags behind applied voltage by exactly 90Â&am
 leads the applied voltage somewhat less than 90Ã&
 lags behind applied voltage somewhat less than 90Ã

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