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The inductor filter should be used when RL is consistently small because_________
  • a)
    Effective filtering takes place when load current is high
  • b)
    Effective filtering takes place when load current is low
  • c)
    Current lags behind voltage
  • d)
    Current leads voltage
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
The inductor filter should be used when RL is consistently small becau...
When RLis infinite, the ripple factor is 0.471. This value is close to that of a rectifier. So, the resistance should be small.
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Most Upvoted Answer
The inductor filter should be used when RL is consistently small becau...
Reasons for using inductor filter when RL is consistently small:
Inductor filter should be used when RL is consistently small because of the following reasons:
- Effective filtering takes place when load current is high: In an inductor filter, the inductor offers high impedance to high-frequency noise, allowing it to filter out unwanted high-frequency components effectively when the load current is high. This helps in reducing the ripple voltage and achieving a smoother output voltage.
- Current lags behind voltage: In an RL circuit, the current flowing through the inductor lags behind the applied voltage due to the inductive reactance. This phase shift between current and voltage helps in filtering out high-frequency noise components, as the inductor tends to oppose sudden changes in current.
Therefore, when RL is consistently small, the inductor filter is more effective in filtering out noise and providing a stable output voltage. It is important to consider the load current and the phase relationship between current and voltage when choosing the appropriate filter for a given circuit.
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The inductor filter should be used when RL is consistently small because_________a)Effective filtering takes place when load current is highb)Effective filtering takes place when load current is lowc)Current lags behind voltaged)Current leads voltageCorrect answer is option 'A'. Can you explain this answer?
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