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From: Cursitor Doom <cd@notformail.com>
Newsgroups: sci.electronics.design
Subject: Re: A Complex Metaphysical Conundrum
Date: Thu, 11 Apr 2024 19:38:25 +0100
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On Thu, 11 Apr 2024 14:02:56 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:

>"Cursitor Doom" <cd@notformail.com> wrote in message 
>news:pk8g1j9u6joiofssfcg9g9qed1lcikluta@4ax.com...
>> On Thu, 11 Apr 2024 11:58:02 -0400, "Edward Rawde"
>> <invalid@invalid.invalid> wrote:
>>
>>>"Cursitor Doom" <cd@notformail.com> wrote in message
>>>news:76nf1j9j04rknbh5kgta74nteeeht3303n@4ax.com...
>>>> On Wed, 10 Apr 2024 21:10:59 -0400, "Edward Rawde"
>>>> <invalid@invalid.invalid> wrote:
>>>>
>>>>>
>>>>>"Cursitor Doom" <cd@notformail.com> wrote in message
>>>>>news:cs4e1j5ohhb7fpcmnft14ad6pv66jtvi34@4ax.com...
>>>>>> On Wed, 10 Apr 2024 18:18:21 -0400, "Edward Rawde"
>>>>>> <invalid@invalid.invalid> wrote:
>>>>>>
>>>>>>>"Cursitor Doom" <cd@notformail.com> wrote in message
>>>>>>>news:i52e1j9ctjqi1k1m9ej1aid2493foetnsq@4ax.com...
>>>>>>>> On Wed, 10 Apr 2024 16:11:39 -0400, "Edward Rawde"
>>>>>>>> <invalid@invalid.invalid> wrote:
>>>>>>>>
>>>>>>>>>"john larkin" <jl@650pot.com> wrote in message
>>>>>>>>>news:v6sd1j1sr89ntc214dku5u5e04pks5toud@4ax.com...
>>>>>>>>>> On Wed, 10 Apr 2024 15:57:55 -0400, "Edward Rawde"
>>>>>>>>>> <invalid@invalid.invalid> wrote:
>>>>>>>>>>
>>>>>>>>>>>"Cursitor Doom" <cd@notformail.com> wrote in message
>>>>>>>>>>>news:c6hd1jdjimga6ifo7b0kv7bqfj9750lbk3@4ax.com...
>>>>>>>>>>>> Gentlemen,
>>>>>>>>>>>>
>>>>>>>>>>>> This is an exam question that trips up even some of the best
>>>>>>>>>>>> students.
>>>>>>>>>>>> See what you make of it!
>>>>>>>>>>>>
>>>>>>>>>>>> Q: Is this statement correct: 'The signal level at the modem 
>>>>>>>>>>>> input
>>>>>>>>>>>> increased by 2dBmV going from +3dBmV to +5dBmV.'
>>>>>>>>>>>>
>>>>>>>>>>>> Your pal, CD.
>>>>>>>>>>>
>>>>>>>>>>>Changing a signal level can be thought of as multiplying the 
>>>>>>>>>>>signal
>>>>>>>>>>>by
>>>>>>>>>>>a
>>>>>>>>>>>constant.
>>>>>>>>>>
>>>>>>>>>> You can change something by adding, too.
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>I haven't looked at it in detail but a bit of playing with a search
>>>>>>>>>engine
>>>>>>>>>finds the question here:
>>>>>>>>>https://broadbandlibrary.com/wise-and-mighty-decibel/
>>>>>>>>>
>>>>>>>>
>>>>>>>> Jeez, when I said, "No Googling" I didn't seriously think anyone 
>>>>>>>> here
>>>>>>>> would be dumb enough to need to actually do so! :-D
>>>>>>>
>>>>>>>I don't see any mention of any search engine in your first post.
>>>>>>>
>>>>>>>I tend to agree with John Larkin on this.
>>>>>>>
>>>>>>>If a student can use a meter to see that a signal which was 3 
>>>>>>>somethings
>>>>>>>is
>>>>>>>now 5 somethings (depending on what is being measured) then I give 
>>>>>>>them
>>>>>>>a
>>>>>>>pass.
>>>>>>
>>>>>> So going back to the orginal question as stated, you're saying the
>>>>>> statement in quotes is *correct* then. Nice to have a straight answer.
>>>>>
>>>>>If you mean that do I think that something increases by 2 when it goes
>>>>>from
>>>>>3 to 5 then yes that seems reasonable to me.
>>>>
>>>> I'm afraid that's not exactly the question, though.
>>>> Here's what was asked again:
>>>>
>>>> Q: Is this statement correct: 'The signal level at the modem input
>>>> increased by 2dBmV going from +3dBmV to +5dBmV.'
>>>>
>>>> You've already nailed your colours to the mast with your opinion that
>>>> the statement is correct. Are you happy with that or would you like to
>>>> change your mind?
>>>
>>>What's wrong with the mind I already have?
>>>
>>>My opinion is in my first reply to you.
>>>
>>>Do the students who take this exam do any practical work or just sit in
>>>class?
>>
>> They're students so of course they don't do anything useful.
>
>Is that because you don't teach them how to do anything useful or because 
>they don't want to be taught how do anything useful? 
>

Sorry, you're new here so you don't know who's who yet. I'm not a
professor - far from it! And these are hypothetical students.