Electrical Engineering (EE) Exam > Electrical Engineering (EE) Questions > In a D.C. generator the critical resistance c...
Start Learning for Free
In a D.C. generator the critical resistance can be increased by
- a)increasing its field resistance
- b)decreasing its field resistance
- c)increasing its speed
- d)decreasing its speed
Correct answer is option 'C'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Most Upvoted Answer
In a D.C. generator the critical resistance can be increased bya)incre...
Increasing the critical resistance in a D.C. generator
Increasing the critical resistance in a D.C. generator can be achieved by increasing its speed.
Explanation:
What is critical resistance?
Critical resistance is the minimum external resistance required to be connected to the armature circuit of a D.C. generator to obtain maximum power output.
Effect of speed on critical resistance:
- The critical resistance of a D.C. generator is directly proportional to the speed of the generator.
- As the speed of the generator is increased, the critical resistance also increases.
- This is because at higher speeds, the back EMF of the generator increases, which in turn requires a higher external resistance in the armature circuit to maintain the same level of current.
Increasing speed vs. increasing field resistance:
- While increasing the field resistance can also affect the critical resistance to some extent, the primary factor that significantly influences the critical resistance is the speed of the generator.
- Increasing the field resistance mainly adjusts the voltage regulation of the generator, while increasing the speed directly impacts the critical resistance.
Therefore, in a D.C. generator, the critical resistance can be increased by increasing its speed rather than by changing its field resistance.
Increasing the critical resistance in a D.C. generator can be achieved by increasing its speed.
Explanation:
What is critical resistance?
Critical resistance is the minimum external resistance required to be connected to the armature circuit of a D.C. generator to obtain maximum power output.
Effect of speed on critical resistance:
- The critical resistance of a D.C. generator is directly proportional to the speed of the generator.
- As the speed of the generator is increased, the critical resistance also increases.
- This is because at higher speeds, the back EMF of the generator increases, which in turn requires a higher external resistance in the armature circuit to maintain the same level of current.
Increasing speed vs. increasing field resistance:
- While increasing the field resistance can also affect the critical resistance to some extent, the primary factor that significantly influences the critical resistance is the speed of the generator.
- Increasing the field resistance mainly adjusts the voltage regulation of the generator, while increasing the speed directly impacts the critical resistance.
Therefore, in a D.C. generator, the critical resistance can be increased by increasing its speed rather than by changing its field resistance.
Attention Electrical Engineering (EE) Students!
To make sure you are not studying endlessly, EduRev has designed Electrical Engineering (EE) study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Electrical Engineering (EE).
|
Explore Courses for Electrical Engineering (EE) exam
|
|
Top Courses for Electrical Engineering (EE)View all
In a D.C. generator the critical resistance can be increased bya)increasing its field resistanceb)decreasing its field resistancec)increasing its speedd)decreasing its speedCorrect answer is option 'C'. Can you explain this answer?
Question Description
In a D.C. generator the critical resistance can be increased bya)increasing its field resistanceb)decreasing its field resistancec)increasing its speedd)decreasing its speedCorrect answer is option 'C'. 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 a D.C. generator the critical resistance can be increased bya)increasing its field resistanceb)decreasing its field resistancec)increasing its speedd)decreasing its speedCorrect answer is option 'C'. 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 a D.C. generator the critical resistance can be increased bya)increasing its field resistanceb)decreasing its field resistancec)increasing its speedd)decreasing its speedCorrect answer is option 'C'. Can you explain this answer?.
In a D.C. generator the critical resistance can be increased bya)increasing its field resistanceb)decreasing its field resistancec)increasing its speedd)decreasing its speedCorrect answer is option 'C'. 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 a D.C. generator the critical resistance can be increased bya)increasing its field resistanceb)decreasing its field resistancec)increasing its speedd)decreasing its speedCorrect answer is option 'C'. 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 a D.C. generator the critical resistance can be increased bya)increasing its field resistanceb)decreasing its field resistancec)increasing its speedd)decreasing its speedCorrect answer is option 'C'. Can you explain this answer?.
Solutions for In a D.C. generator the critical resistance can be increased bya)increasing its field resistanceb)decreasing its field resistancec)increasing its speedd)decreasing its speedCorrect answer is option 'C'. 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 a D.C. generator the critical resistance can be increased bya)increasing its field resistanceb)decreasing its field resistancec)increasing its speedd)decreasing its speedCorrect answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
In a D.C. generator the critical resistance can be increased bya)increasing its field resistanceb)decreasing its field resistancec)increasing its speedd)decreasing its speedCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for In a D.C. generator the critical resistance can be increased bya)increasing its field resistanceb)decreasing its field resistancec)increasing its speedd)decreasing its speedCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of In a D.C. generator the critical resistance can be increased bya)increasing its field resistanceb)decreasing its field resistancec)increasing its speedd)decreasing its speedCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice In a D.C. generator the critical resistance can be increased bya)increasing its field resistanceb)decreasing its field resistancec)increasing its speedd)decreasing its speedCorrect answer is option 'C'. Can you explain this answer? tests, examples and also practice Electrical Engineering (EE) tests.
|
|
Explore Courses for Electrical Engineering (EE) exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup