Laminated yoke in dc motor can reduce

The commutator pitch for simplex wave winding is equal to

For a linear electromagnetic circuit,the following statement is true

In a dc motor the windage loss is proportional to

Which of the following is not a part of dc machine?

A rotating electrical machine having its self inductance of both the stator and the rotor winding, independent of rotor position will definitely not developed

For a 4-pole machine wave winding is impossible with — armature conductors

In a dc machine armature windind,the number of commutator segments is equal to the number of armature

Width of a carbon brush should be equal to

The commutator of a dc motor serves the purpose of

In electromechanical energy conversion devices(e.g. generators and motors),a small air gap is left between the stator and the rotor ignored to

The developed electromagnetic force and/or torqe in electromechanical energy conversion system act in a direction that tends

Wave winding is composed of

Wave winding is employed in a dc machine of

Minimum number of coils for 400v,6-poles lap connected dc machine for a maximum voltage of 15v between adjacent commutator segments should be

Reluctance torque in rotating machines is present,when

The teeth in the armature of a dc machine are something skewed.This is done to reduce

Armature of a dc machine is made of

Which of the following are the variable losses in a rotating machine?

The number of parallel paths for a 4-pole duplex lap winding will be