Question

a) Give a brief description of the type of DC motor that operates with its field windings running in Series with the armature and list two (2) of its features.

Answer 1

Answer:

The answer to the question is:

Explanation:

The series motor or series excitation motors, is a type of direct current electric motor in which the armature and the inductor or excitation winding are connected in series. The applied voltage is constant, while the excitation field increases with the load, since the current is the same excitation current. The flow increases in proportion to the current in the armor, as the flow grows with the load, the velocity drops as that load increases.

The main features of this engine are:

- It is packed when it is idle, because the speed of a direct current motor increases as the inductor flow decreases and, in the series motor, this decreases with increasing speed, since the intensity in the inductor is the same as in the induced.

- The power is almost constant at any speed.

- The abrupt variations in the supply voltage affect it little, since an increase in this causes an increase in the intensity and, therefore, in the flow and the counter-electromotive force, stabilizing the absorbed intensity.