Electrical Engineering XYZ MCQs
Commutator pitch is best described as:
- Distance between staring of first coil and next successive coil
- Number of commutator segments between two successive coils
- Number of conductors spanned by one coil at the back end of the armature
- Number of conductors spanned by one coil at the front end of the armature
Correct answer: 2. Number of commutator segments between two successive coils
Explanation:
Commutator pitch is best described as:
Number of commutator segments between two successive coils
The commutator pitch refers to the number of commutator segments that are spanned by one coil on the armature. In a DC machine, the armature winding is divided into coils, and each coil is connected to a specific number of commutator segments. The commutator pitch is the count of these segments between the two ends of a coil.
Option A refers to the coil span, which is the distance between the starting point of the first coil and the next successive coil. This is not the definition of commutator pitch.
Option B correctly describes the commutator pitch as it considers the number of commutator segments between two successive coils.
Option C and D are not accurate definitions of commutator pitch. The pitch is related to the commutator segments, not the conductors, and it is not specifically related to either the front or back end of the armature.