Electrical Engineering (EE) Exam > Electrical Engineering (EE) Questions > Which of the following is true?a)Coupling cap...
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Which of the following is true?
- a)Coupling capacitors causes the gain to fall off at high frequencies
- b)Internal capacitor of a device causes the gain to fall off at low frequencies
- c)All of the mentioned
- d)None of the mentioned
Correct answer is option 'D'. Can you explain this answer?
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Which of the following is true?a)Coupling capacitors causes the gain t...
Both the statements are false.
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Which of the following is true?a)Coupling capacitors causes the gain t...
Internal Capacitors and Gain
Internal capacitors of a device do not cause the gain to fall off at low frequencies. In fact, internal capacitors are often used in electronic circuits to block DC voltage while allowing AC signals to pass through. They are designed to have a minimal impact on the gain of the circuit at low frequencies.
Coupling Capacitors and Gain
On the other hand, coupling capacitors are used to block DC components from one part of a circuit to another, allowing only the AC components to pass through. Coupling capacitors can cause the gain to fall off at high frequencies due to their impedance characteristics. As the frequency increases, the impedance of the coupling capacitor decreases, affecting the gain of the circuit at higher frequencies.
Conclusion
Therefore, the correct statement is that coupling capacitors cause the gain to fall off at high frequencies, not internal capacitors at low frequencies. It is crucial to understand the role of capacitors in a circuit to design and analyze electronic systems effectively.
Internal capacitors of a device do not cause the gain to fall off at low frequencies. In fact, internal capacitors are often used in electronic circuits to block DC voltage while allowing AC signals to pass through. They are designed to have a minimal impact on the gain of the circuit at low frequencies.
Coupling Capacitors and Gain
On the other hand, coupling capacitors are used to block DC components from one part of a circuit to another, allowing only the AC components to pass through. Coupling capacitors can cause the gain to fall off at high frequencies due to their impedance characteristics. As the frequency increases, the impedance of the coupling capacitor decreases, affecting the gain of the circuit at higher frequencies.
Conclusion
Therefore, the correct statement is that coupling capacitors cause the gain to fall off at high frequencies, not internal capacitors at low frequencies. It is crucial to understand the role of capacitors in a circuit to design and analyze electronic systems effectively.
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Which of the following is true?a)Coupling capacitors causes the gain to fall off at high frequenciesb)Internal capacitor of a device causes the gain to fall off at low frequenciesc)All of the mentionedd)None of the mentionedCorrect answer is option 'D'. Can you explain this answer?
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