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Mark the wrong option. Which of the following cause and effect behaviour in speed control is correct when field resistance is increased.
- a)Decrease in flux
- b)Increase in armature current
- c)Increase in EMF
- d)Decrease in speed
Correct answer is option 'C'. Can you explain this answer?
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Verified Answer
Mark the wrong option. Which of the following cause and effect behavio...
When field resistance is increased, emf actually decreases, not increases due to fall in flux.
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Mark the wrong option. Which of the following cause and effect behavio...
Cause and Effect Behaviour in Speed Control when Field Resistance is Increased
When field resistance is increased, the following cause and effect behaviour in speed control can be observed:
- Increase in EMF: As the field resistance is increased, the current flowing through the field winding decreases. This causes a decrease in the magnetic field strength, which in turn results in an increase in the EMF produced in the armature windings. This increase in EMF counteracts the decrease in the magnetic field strength and helps to maintain a constant speed.
- Decrease in flux: Although it is mentioned as an option in the question, an increase in field resistance does not cause a decrease in flux. Instead, it causes a decrease in the magnetic field strength, which can be counteracted by the increase in EMF.
- Increase in armature current: An increase in field resistance does not cause an increase in armature current. In fact, it causes a decrease in the current flowing through the field winding.
- Decrease in speed: An increase in field resistance can cause a decrease in speed only if the increase in EMF is not enough to counteract the decrease in the magnetic field strength. However, as explained above, the increase in EMF helps to maintain a constant speed.
Conclusion
In conclusion, the correct cause and effect behaviour in speed control when field resistance is increased is an increase in EMF. This increase in EMF counteracts the decrease in magnetic field strength and helps to maintain a constant speed.
When field resistance is increased, the following cause and effect behaviour in speed control can be observed:
- Increase in EMF: As the field resistance is increased, the current flowing through the field winding decreases. This causes a decrease in the magnetic field strength, which in turn results in an increase in the EMF produced in the armature windings. This increase in EMF counteracts the decrease in the magnetic field strength and helps to maintain a constant speed.
- Decrease in flux: Although it is mentioned as an option in the question, an increase in field resistance does not cause a decrease in flux. Instead, it causes a decrease in the magnetic field strength, which can be counteracted by the increase in EMF.
- Increase in armature current: An increase in field resistance does not cause an increase in armature current. In fact, it causes a decrease in the current flowing through the field winding.
- Decrease in speed: An increase in field resistance can cause a decrease in speed only if the increase in EMF is not enough to counteract the decrease in the magnetic field strength. However, as explained above, the increase in EMF helps to maintain a constant speed.
Conclusion
In conclusion, the correct cause and effect behaviour in speed control when field resistance is increased is an increase in EMF. This increase in EMF counteracts the decrease in magnetic field strength and helps to maintain a constant speed.
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Mark the wrong option. Which of the following cause and effect behaviour in speed control is correct when field resistance is increased.a)Decrease in fluxb)Increase in armature currentc)Increase in EMFd)Decrease in speedCorrect answer is option 'C'. Can you explain this answer?
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Mark the wrong option. Which of the following cause and effect behaviour in speed control is correct when field resistance is increased.a)Decrease in fluxb)Increase in armature currentc)Increase in EMFd)Decrease in 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 Mark the wrong option. Which of the following cause and effect behaviour in speed control is correct when field resistance is increased.a)Decrease in fluxb)Increase in armature currentc)Increase in EMFd)Decrease in 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 Mark the wrong option. Which of the following cause and effect behaviour in speed control is correct when field resistance is increased.a)Decrease in fluxb)Increase in armature currentc)Increase in EMFd)Decrease in speedCorrect answer is option 'C'. Can you explain this answer?.
Mark the wrong option. Which of the following cause and effect behaviour in speed control is correct when field resistance is increased.a)Decrease in fluxb)Increase in armature currentc)Increase in EMFd)Decrease in 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 Mark the wrong option. Which of the following cause and effect behaviour in speed control is correct when field resistance is increased.a)Decrease in fluxb)Increase in armature currentc)Increase in EMFd)Decrease in 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 Mark the wrong option. Which of the following cause and effect behaviour in speed control is correct when field resistance is increased.a)Decrease in fluxb)Increase in armature currentc)Increase in EMFd)Decrease in speedCorrect answer is option 'C'. Can you explain this answer?.
Solutions for Mark the wrong option. Which of the following cause and effect behaviour in speed control is correct when field resistance is increased.a)Decrease in fluxb)Increase in armature currentc)Increase in EMFd)Decrease in 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).
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Mark the wrong option. Which of the following cause and effect behaviour in speed control is correct when field resistance is increased.a)Decrease in fluxb)Increase in armature currentc)Increase in EMFd)Decrease in speedCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for Mark the wrong option. Which of the following cause and effect behaviour in speed control is correct when field resistance is increased.a)Decrease in fluxb)Increase in armature currentc)Increase in EMFd)Decrease in speedCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of Mark the wrong option. Which of the following cause and effect behaviour in speed control is correct when field resistance is increased.a)Decrease in fluxb)Increase in armature currentc)Increase in EMFd)Decrease in speedCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Mark the wrong option. Which of the following cause and effect behaviour in speed control is correct when field resistance is increased.a)Decrease in fluxb)Increase in armature currentc)Increase in EMFd)Decrease in speedCorrect answer is option 'C'. Can you explain this answer? tests, examples and also practice Electrical Engineering (EE) tests.
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