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Questions (multiple-choice)

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HF_ATL

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Hello all,

I have some doubts in the following multiple-choice quesitons. Can you please help me to get the correct answer?

Maybe I'll have more in the following days but for now these are my doubts.


Thank you!

questao_duvida1.png
questao_duvida2.png
questao_duvida3.png
 

The circuit does not appear related to the question.
 

Your doubt are well founded. None of the answers are correct.

I suspect answer 'a)' is supposed to say "reduce the impedance at the input" or similar which would make it the correct selection but 'ressonance' has nothing to do with it.

Brian.
 

None of the answers are correct.
I agree for the first ("C1" related) question. The answers to the second and third question make sense.
 

Many thanks for your comments!

I'd pick c) and a) for the 2nd and 3rd question, respectively.
Guess that they mistranslated the first one...
 

I'd pick c) and a) for the 2nd and 3rd question, respectively.
Guess that they mistranslated the first one...
Yes and yes.
 
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    HF_ATL

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it is possible question 1 intends to say D1. Two of the answers sound like they are more applicable to the application of diodes than to capacitors. One of these statements would be correct if C1 is replaced with D1.

For question 2, a/b are technically true statements. However not normally for components used in this circuit and at these frequencies.

question 3 is easy to look up on wikipedia.
 
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