Electrical Machines
In a dc generator operating on load with its brushes on the geometrical neutral axis (GNA), the magnetic neutral axis (MNA) is shifted in the direction of rotation. Now, if the brushes are given a lead of 90° (electrical), then the MNA will

 coincide with the GNA
 shift forward by 90°
 shift forward by more than 90°
 shift forward by less than 90°

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In a step down transformer which one of the following statements is true?

 Secondary power is less than primary power.
 Number of secondary turns is more than that of primary.
 Secondary current is less than primary current.
  Number of secondary turns is less than primary turns.

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Electrical Machines