Electrical Machines
No load primary current in a transformer

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

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
For a given torque, reducing diverter resistance of a DC series motor causes

 increase in speed demanding more armature current.
 decrease in speed but armature current remains the same.
 decrease in speed demanding less armature current.
 increase in speed but armature currnet remains the same.

ANSWER DOWNLOAD EXAMIANS APP