Question 4
State the function of the following in a d.c. generator
- yoke;
- poles;
- commutator;
- armature.
Observation
The expected answers were;
- Yoke:
- It carries the magnetic flux produced by the poles.
- It provides mechanical support for the whole machine
- Poles:
(i) produce the magnetic flux
(ii) act as mechanical support to the field coils
- Commutator: this converts the alternating current (A.C) induced in the armature into unidirectional current.
- Armature: This generates the electromotive force (e.m.f) when it cuts the magnetic field
Candidates that attempted this question did fairly well.