Welcome to your DC Machines
In a dc machine armature windind,the number of commutator segments is equal to the number of armature
A homopolar generator usually has
Armature of a dc machine is made of
4 pole generator with 16 coils has a two layer lap winding.The pole pitch is
The teeth in the armature of a dc machine are something skewed.This is done to reduce
In a dc generator,the ripples in the direct emf generated are reduced by employing
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
Wave winding is employed in a dc machine of
Wave winding is composed of
The developed electromagnetic force and/or torqe in electromechanical energy conversion system act in a direction that tends
The field coils of a dc generator are usually made of
Which of the following is not a part of dc machine?
The commutator pitch for simplex lap winding is
Width of a carbon brush should be equal to
The commutator pitch for simplex wave winding is equal to
Minimum number of coils for 400v,6-poles lap connected dc machine for a maximum voltage of 15v between adjacent commutator segments should be
Which of the following are the variable losses in a rotating 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
In a dc motor the windage loss is proportional to
