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September 21, 2025, 04:27:43 pm
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Author Topic: Naved's Questions  (Read 6608 times)  Share 

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naved_s9994

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Re: Naved's Questions
« Reply #15 on: June 07, 2009, 11:59:23 pm »
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any formula.. it was something like square root 2 something....


Quote from: Flaming_Arrow on June 07, 2009, 11:57:34 pm
Quote from: naved_s9994 on June 07, 2009, 11:54:12 pm
could you explain v rms formula..
and is dc, if displayed through a graph a straight line ( direct currect)
and ac is, like a sin wave? (alternative current?)

V_rms s the average voltage

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naved_s9994

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Re: Naved's Questions
« Reply #16 on: June 08, 2009, 12:02:30 am »
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naved_s9994

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Re: Naved's Questions
« Reply #17 on: June 08, 2009, 12:04:56 am »
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I.e Vrms = Vpeak/ (2^1/2)
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simplicity123

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Re: Naved's Questions
« Reply #18 on: June 08, 2009, 08:27:29 am »
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just adding on to the topic of Vrms, what types of question do u think we can expect? I havent really seen too many Vrms questions in trial exams or my textbook..
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Damo17

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Re: Naved's Questions
« Reply #19 on: June 08, 2009, 08:40:34 am »
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using in formulas are only in further electronics for unit 3. But they are also in the Electric power section of unit 4 so you will learn it then.
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vamsiaus

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Re: Naved's Questions
« Reply #20 on: June 08, 2009, 08:51:02 am »
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lol if we are working out gain for an inverted amplifier, do we actually put the negative in the answer or because it is a ratio do we leave it as positive.
Thanks in advance to anyone who can help.
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IntoTheNewWorld

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Re: Naved's Questions
« Reply #21 on: June 08, 2009, 09:11:11 am »
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Quote from: vamsiaus on June 08, 2009, 08:51:02 am
lol if we are working out gain for an inverted amplifier, do we actually put the negative in the answer or because it is a ratio do we leave it as positive.
Thanks in advance to anyone who can help.

the TSFX guy said leave it because gain has no units (which is not what my teacher says) =[
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naved_s9994

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Re: Naved's Questions
« Reply #22 on: June 08, 2009, 09:45:39 am »
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my teavher said, leave as ratio..no units
Quote from: SmRandmAzn on June 08, 2009, 09:11:11 am
Quote from: vamsiaus on June 08, 2009, 08:51:02 am
lol if we are working out gain for an inverted amplifier, do we actually put the negative in the answer or because it is a ratio do we leave it as positive.
Thanks in advance to anyone who can help.

the TSFX guy said leave it because gain has no units (which is not what my teacher says) =[
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vamsiaus

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Re: Naved's Questions
« Reply #23 on: June 08, 2009, 09:48:52 am »
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its just the solutions for the itute prac 2009 exam has a negative infront of the answer for gain. So yeah just wanted to confirm.
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naved_s9994

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Re: Naved's Questions
« Reply #24 on: June 08, 2009, 09:50:00 am »
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cool
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naved_s9994

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Re: Naved's Questions
« Reply #25 on: June 08, 2009, 09:53:22 am »
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how would you  define the effects of air resistance on an object
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Damo17

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Re: Naved's Questions
« Reply #26 on: June 08, 2009, 10:11:58 am »
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Quote from: naved_s9994 on June 08, 2009, 09:53:22 am
how would you  define the effects of air resistance on an object

in most cases you are told to disregard air resistance. The only place it will possibly come up on is a projectile motion question just asking what the affect of air resistance is on the distance traveled of the projectile which you would have worked out from a previous question. In this case air resistance shortens the projectiles distance traveled.
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IntoTheNewWorld

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Re: Naved's Questions
« Reply #27 on: June 08, 2009, 10:15:06 am »
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Quote from: naved_s9994 on June 08, 2009, 09:53:22 am
how would you  define the effects of air resistance on an object

Also when there are questions asking the net force acting on an object (and there are arrows to choose from) when airbourne in projectile motion or whatever, it will be angled slightly towards the left (if fired from the left) as opposed to straight down
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naved_s9994

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Re: Naved's Questions
« Reply #28 on: June 08, 2009, 10:15:27 am »
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or could a better way perhaps, be to say shortens the range - like making it technicaal language??

Thanks damo17
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naved_s9994

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Re: Naved's Questions
« Reply #29 on: June 08, 2009, 10:16:30 am »
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thnx random azn
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