Question 244Electricity/Electronics - QMED70% to pass
In DC motor construction, with regard to the individual armature coils' ends, which statement is true?
AI Explanation
The correct answer is B) The coil ends are connected to the commutator bars.
In a DC motor, the armature coils are wound around the armature core. The ends of these individual coils are connected to the commutator bars, which allow the current to flow in and out of the armature coils as the motor rotates. This connection to the commutator bars is a key part of the DC motor construction, as it enables the switching of current flow that produces the rotating magnetic field and torque.
The other options are incorrect because: A) The brush pigtails are connected to the commutator bars, not the coil ends. C) The coils are placed in the core slots, but the coil ends are not embedded into them. D) The field windings are separate from the armature coils and are not spliced with their ends.
Related Questions
#242 What happens to the current in a series circuit when the voltage remains constant and the resistance increases? #243 The torque produced by a DC motor armature is the multiplication product of two factors, one being the density of the magnetic flux which is dependent upon the field current. What is the other multiplication factor? #245 What is the function of the commutator associated with a DC motor? #246 In DC motor construction, where are the commutating windings wound? #247 Which of the following statements describes what will happen when both the polarity of the field poles, and the direction of current to the brushes of a DC motor are reversed?