Electronics and Communication Engineering (ECE) Exam > Electronics and Communication Engineering (ECE) Questions > Assertion (A): The phase angle plot in Bode d... Start Learning for Free
Assertion (A): The phase angle plot in Bode diagram is not affected by the variation in the gain of the system.
Reason(R): The variation in the gain of the system has no effect on the phase margin of the system.
Reason(R): The variation in the gain of the system has no effect on the phase margin of the system.
- a)Both A and R are true but R is correct explanation of A
- b)Both A and R are true but R is not correct explanation of A
- c)A is true but R is false
- d)A is false but R is true
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
Assertion (A): The phase angle plot in Bode diagram is not affected by...
The variation in the gain of the system has effect on the phase margin but phase plot is not affected.
Free Test
FREE
| Start Free Test |
Community Answer
Assertion (A): The phase angle plot in Bode diagram is not affected by...
Understanding the Assertion and Reason
The assertion (A) states that the phase angle plot in a Bode diagram remains unaffected by changes in the gain of the system. The reason (R) claims that variations in gain do not impact the phase margin of the system.
Analysis of Assertion (A)
- The phase angle in a Bode plot primarily reflects the system's dynamics, specifically the time delays and phase shifts introduced by reactive components (inductors and capacitors).
- Changes in gain affect the magnitude plot but do not alter the phase plot. Therefore, the assertion is true.
Analysis of Reason (R)
- Phase margin is a measure of the stability of a control system and is defined as the difference between the phase of the system at the gain crossover frequency and -180 degrees.
- While gain variations influence the gain margin, they do not directly change the phase characteristics of the system. However, the reasoning that gain does not affect phase margin can be misleading since the system's response may change at different gain levels, potentially affecting stability.
Conclusion
- Since assertion (A) is indeed true and reason (R) is false (as it misrepresents the relationship between gain and phase margin), the correct option is (C): A is true but R is false.
- The key takeaway is that while the phase plot remains unchanged with gain adjustments, the implications for system stability must be carefully considered regarding phase margin.
The assertion (A) states that the phase angle plot in a Bode diagram remains unaffected by changes in the gain of the system. The reason (R) claims that variations in gain do not impact the phase margin of the system.
Analysis of Assertion (A)
- The phase angle in a Bode plot primarily reflects the system's dynamics, specifically the time delays and phase shifts introduced by reactive components (inductors and capacitors).
- Changes in gain affect the magnitude plot but do not alter the phase plot. Therefore, the assertion is true.
Analysis of Reason (R)
- Phase margin is a measure of the stability of a control system and is defined as the difference between the phase of the system at the gain crossover frequency and -180 degrees.
- While gain variations influence the gain margin, they do not directly change the phase characteristics of the system. However, the reasoning that gain does not affect phase margin can be misleading since the system's response may change at different gain levels, potentially affecting stability.
Conclusion
- Since assertion (A) is indeed true and reason (R) is false (as it misrepresents the relationship between gain and phase margin), the correct option is (C): A is true but R is false.
- The key takeaway is that while the phase plot remains unchanged with gain adjustments, the implications for system stability must be carefully considered regarding phase margin.
 | Explore Courses for Electronics and Communication Engineering (ECE) exam |  |
Top Courses for Electronics and Communication Engineering (ECE)View all
Top Courses for Electronics and Communication Engineering (ECE)
Question Description
Assertion (A): The phase angle plot in Bode diagram is not affected by the variation in the gain of the system.Reason(R): The variation in the gain of the system has no effect on the phase margin of the system.a)Both A and R are true but R is correct explanation of Ab)Both A and R are true but R is not correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer? for Electronics and Communication Engineering (ECE) 2026 is part of Electronics and Communication Engineering (ECE) preparation. The Question and answers have been prepared according to the Electronics and Communication Engineering (ECE) exam syllabus. Information about Assertion (A): The phase angle plot in Bode diagram is not affected by the variation in the gain of the system.Reason(R): The variation in the gain of the system has no effect on the phase margin of the system.a)Both A and R are true but R is correct explanation of Ab)Both A and R are true but R is not correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Electronics and Communication Engineering (ECE) 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Assertion (A): The phase angle plot in Bode diagram is not affected by the variation in the gain of the system.Reason(R): The variation in the gain of the system has no effect on the phase margin of the system.a)Both A and R are true but R is correct explanation of Ab)Both A and R are true but R is not correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer?.
Assertion (A): The phase angle plot in Bode diagram is not affected by the variation in the gain of the system.Reason(R): The variation in the gain of the system has no effect on the phase margin of the system.a)Both A and R are true but R is correct explanation of Ab)Both A and R are true but R is not correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer? for Electronics and Communication Engineering (ECE) 2026 is part of Electronics and Communication Engineering (ECE) preparation. The Question and answers have been prepared according to the Electronics and Communication Engineering (ECE) exam syllabus. Information about Assertion (A): The phase angle plot in Bode diagram is not affected by the variation in the gain of the system.Reason(R): The variation in the gain of the system has no effect on the phase margin of the system.a)Both A and R are true but R is correct explanation of Ab)Both A and R are true but R is not correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Electronics and Communication Engineering (ECE) 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Assertion (A): The phase angle plot in Bode diagram is not affected by the variation in the gain of the system.Reason(R): The variation in the gain of the system has no effect on the phase margin of the system.a)Both A and R are true but R is correct explanation of Ab)Both A and R are true but R is not correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer?.
Solutions for Assertion (A): The phase angle plot in Bode diagram is not affected by the variation in the gain of the system.Reason(R): The variation in the gain of the system has no effect on the phase margin of the system.a)Both A and R are true but R is correct explanation of Ab)Both A and R are true but R is not correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Electronics and Communication Engineering (ECE). Download more important topics, notes, lectures and mock test series for Electronics and Communication Engineering (ECE) Exam by signing up for free.
Here you can find the meaning of Assertion (A): The phase angle plot in Bode diagram is not affected by the variation in the gain of the system.Reason(R): The variation in the gain of the system has no effect on the phase margin of the system.a)Both A and R are true but R is correct explanation of Ab)Both A and R are true but R is not correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Assertion (A): The phase angle plot in Bode diagram is not affected by the variation in the gain of the system.Reason(R): The variation in the gain of the system has no effect on the phase margin of the system.a)Both A and R are true but R is correct explanation of Ab)Both A and R are true but R is not correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for Assertion (A): The phase angle plot in Bode diagram is not affected by the variation in the gain of the system.Reason(R): The variation in the gain of the system has no effect on the phase margin of the system.a)Both A and R are true but R is correct explanation of Ab)Both A and R are true but R is not correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of Assertion (A): The phase angle plot in Bode diagram is not affected by the variation in the gain of the system.Reason(R): The variation in the gain of the system has no effect on the phase margin of the system.a)Both A and R are true but R is correct explanation of Ab)Both A and R are true but R is not correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Assertion (A): The phase angle plot in Bode diagram is not affected by the variation in the gain of the system.Reason(R): The variation in the gain of the system has no effect on the phase margin of the system.a)Both A and R are true but R is correct explanation of Ab)Both A and R are true but R is not correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer? tests, examples and also practice Electronics and Communication Engineering (ECE) tests.
| Explore Courses for Electronics and Communication Engineering (ECE) exam | |
Top Courses for Electronics and Communication Engineering (ECE)
Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
x![]()
All Access Pass for Electronics and Communication Engineering (ECE)
All Tests | All Videos | All Notes
