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When phase-lag compensation is used in a system, gain crossover frequency, band width and undamped frequency are respectively :
- a)increased, increased, increased
- b)increased, increased, decreased
- c)increased, decreased, decreased
- d)decreased, decreased, decreased
Correct answer is option 'D'. Can you explain this answer?
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When phase-lag compensation is used in a system, gain crossover freque...
Explanation:
Gain Crossover Frequency:
- In a system with phase-lag compensation, the gain crossover frequency decreases. This is because phase-lag compensation introduces additional phase lag in the system, which shifts the phase curve to the right.
- As a result, the gain crossover frequency decreases as the phase margin increases.
Bandwidth:
- The bandwidth of the system also decreases with phase-lag compensation. This is because the phase lag introduced by the compensation reduces the system's ability to respond to high-frequency signals.
- As a result, the bandwidth of the system decreases as the phase lag increases.
Undamped Frequency:
- The undamped frequency of the system also decreases with phase-lag compensation. This is because the additional phase lag introduced by the compensation reduces the system's overall stability.
- As a result, the undamped frequency decreases as the phase lag increases.
Therefore, when phase-lag compensation is used in a system, the gain crossover frequency, bandwidth, and undamped frequency all decrease.
Gain Crossover Frequency:
- In a system with phase-lag compensation, the gain crossover frequency decreases. This is because phase-lag compensation introduces additional phase lag in the system, which shifts the phase curve to the right.
- As a result, the gain crossover frequency decreases as the phase margin increases.
Bandwidth:
- The bandwidth of the system also decreases with phase-lag compensation. This is because the phase lag introduced by the compensation reduces the system's ability to respond to high-frequency signals.
- As a result, the bandwidth of the system decreases as the phase lag increases.
Undamped Frequency:
- The undamped frequency of the system also decreases with phase-lag compensation. This is because the additional phase lag introduced by the compensation reduces the system's overall stability.
- As a result, the undamped frequency decreases as the phase lag increases.
Therefore, when phase-lag compensation is used in a system, the gain crossover frequency, bandwidth, and undamped frequency all decrease.
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When phase-lag compensation is used in a system, gain crossover frequency, band width and undamped frequency are respectively :a)increased, increased, increasedb)increased, increased, decreasedc)increased, decreased, decreasedd)decreased, decreased, decreasedCorrect answer is option 'D'. Can you explain this answer?
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