Electrical Engineering (EE) Exam  >  Electrical Engineering (EE) Questions  >  In normal dc machines operating at full load ... Start Learning for Free
In normal dc machines operating at full load conditions the most powerful electromagnet is
  • a)
    field winding
  • b)
    armature winding
  • c)
    interpole winding
  • d)
    interpole and compensating windings together
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
In normal dc machines operating at full load conditions the most power...
View all questions of this test
Most Upvoted Answer
In normal dc machines operating at full load conditions the most power...
The most powerful electromagnet in a normal DC machine operating at full load conditions is the field winding (option A). Let's understand why this is the correct answer by examining the working principle and components of a DC machine.

Working Principle of a DC Machine:
A DC machine works on the principle of electromagnetic induction. It converts mechanical energy into electrical energy (generator mode) or vice versa (motor mode) using the interaction between the magnetic field and the current-carrying conductors.

Components of a DC Machine:
1. Field Winding: It is a coil of wire wound around the pole pieces of the machine. The field winding produces the magnetic field necessary for the operation of the machine. It can be either a shunt, series, or compound winding, depending on the machine's design.

2. Armature Winding: It is a set of conductors that are mounted on the rotor or the armature of the machine. When the armature winding carries current, it interacts with the magnetic field produced by the field winding, resulting in the generation of a mechanical force (motor mode) or an induced voltage (generator mode).

3. Interpole Winding: It is an additional winding placed between the main poles of the machine. The interpole winding helps in reducing the armature reaction and prevents commutation problems in the machine. It produces a magnetic field that counteracts the armature field distortion.

4. Compensating Winding: It is another additional winding used to reduce the cross-magnetizing effect in the machine. The compensating winding produces a magnetic field that is opposite to the armature field, compensating for its effect on the main field.

Explanation of the Answer:
In a normal DC machine operating at full load conditions, the most powerful electromagnet is the field winding. This is because the field winding is responsible for producing the main magnetic field that interacts with the armature winding. The strength of the magnetic field determines the machine's overall performance and power output.

The armature winding, interpole winding, and compensating winding do play important roles in the operation of the machine, but they do not directly influence the strength of the magnetic field. The armature winding carries the load current, inducing the mechanical force or the induced voltage. The interpole winding and compensating winding help in reducing the armature reaction and improving the commutation process.

However, it is the field winding that determines the strength of the magnetic field and, consequently, the power of the electromagnet. By controlling the current flowing through the field winding, the operator can adjust the magnetic field strength and, thus, control the machine's performance and power output.

In conclusion, the field winding is the most powerful electromagnet in a normal DC machine operating at full load conditions because it determines the strength of the magnetic field, which is essential for the machine's operation and power output.
Explore Courses for Electrical Engineering (EE) exam

Top Courses for Electrical Engineering (EE)

In normal dc machines operating at full load conditions the most powerful electromagnet isa)field windingb)armature windingc)interpole windingd)interpole and compensating windings togetherCorrect answer is option 'A'. Can you explain this answer?
Question Description
In normal dc machines operating at full load conditions the most powerful electromagnet isa)field windingb)armature windingc)interpole windingd)interpole and compensating windings togetherCorrect answer is option 'A'. Can you explain this answer? for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about In normal dc machines operating at full load conditions the most powerful electromagnet isa)field windingb)armature windingc)interpole windingd)interpole and compensating windings togetherCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In normal dc machines operating at full load conditions the most powerful electromagnet isa)field windingb)armature windingc)interpole windingd)interpole and compensating windings togetherCorrect answer is option 'A'. Can you explain this answer?.
Solutions for In normal dc machines operating at full load conditions the most powerful electromagnet isa)field windingb)armature windingc)interpole windingd)interpole and compensating windings togetherCorrect answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Electrical Engineering (EE). Download more important topics, notes, lectures and mock test series for Electrical Engineering (EE) Exam by signing up for free.
Here you can find the meaning of In normal dc machines operating at full load conditions the most powerful electromagnet isa)field windingb)armature windingc)interpole windingd)interpole and compensating windings togetherCorrect answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of In normal dc machines operating at full load conditions the most powerful electromagnet isa)field windingb)armature windingc)interpole windingd)interpole and compensating windings togetherCorrect answer is option 'A'. Can you explain this answer?, a detailed solution for In normal dc machines operating at full load conditions the most powerful electromagnet isa)field windingb)armature windingc)interpole windingd)interpole and compensating windings togetherCorrect answer is option 'A'. Can you explain this answer? has been provided alongside types of In normal dc machines operating at full load conditions the most powerful electromagnet isa)field windingb)armature windingc)interpole windingd)interpole and compensating windings togetherCorrect answer is option 'A'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice In normal dc machines operating at full load conditions the most powerful electromagnet isa)field windingb)armature windingc)interpole windingd)interpole and compensating windings togetherCorrect answer is option 'A'. Can you explain this answer? tests, examples and also practice Electrical Engineering (EE) tests.
Explore Courses for Electrical Engineering (EE) exam

Top Courses for Electrical Engineering (EE)

Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev