Magnetic field of a DC generator is produced by what?
A. Permanent magnets.
B. Electromagnets.
C. Both B and C.
D. None of the options.
Show Answer
Answer: B
Share your understanding of this question with the correct explanation.
The magnetic field of a DC generator is produced by electromagnets. Electromagnets are coils of wire wound around a magnetic core, which generate a magnetic field when an electric current passes through the coils.
In a DC generator, the electromagnets are known as the field windings. These field windings are typically placed on the stator, which is the stationary part of the generator. The field windings are energized by the external DC power source, such as a battery or another DC source.
When the field windings are energized, they create a magnetic field within the generator. This magnetic field interacts with the rotating armature, which is the part of the generator that generates the electrical output. The interaction between the magnetic field and the armature conductors induces an electromotive force (emf) in the armature, resulting in the generation of electrical power.
Therefore, the correct answer is option B: “Electromagnets.”