A. Secondary winding surrounds the primary winding B. Primary winding surrounds the secondary winding C. Both are usual arrangements D. None of the above
A. Improves the efficiency B. Helps the rotor teeth to remain under the stator teeth C. Helps in reducing the tendency of the rotor teeth to remain under the stator teeth D. Improves the power factor
A. Provide mechanical balance B. Improve power factor and provide better speed regulation C. Prevent hunting in the motor D. Eliminate armature reaction
A. Brush axis is 45° electrical to field axis B. Brush axis coincides with the field axis C. Brush axis is 90° electrical to field axis D. Both b. and (c)
