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October 18, 2025, 04:31:18 am
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Author Topic: Change in time  (Read 822 times)  Share 

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kenhung123

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Change in time
« on: August 03, 2010, 10:59:32 pm »
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In the EMF equation, is delta t the time taken for a quarter rotation?
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Whatlol

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Re: Change in time
« Reply #1 on: August 03, 2010, 11:06:25 pm »
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Quote from: kenhung123 on August 03, 2010, 10:59:32 pm
In the EMF equation, is delta t the time taken for a quarter rotation?

no its just simply the change in time. it depends on the question.
It may be the time taken for a quarter rotation but it may not be.
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lawrencep93

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Re: Change in time
« Reply #2 on: August 03, 2010, 11:35:28 pm »
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They normally give you frequency so time = 1/(frequency in HZ), I think time is one period, which is one full rotation. Had my GA today lol.
O wait I think ur meant to divide it by 4 my bad.
« Last Edit: August 04, 2010, 12:29:32 am by lawrencep93 »
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crappy

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Re: Change in time
« Reply #3 on: August 04, 2010, 12:23:47 am »
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Quote from: kenhung123 on August 03, 2010, 10:59:32 pm
In the EMF equation, is delta t the time taken for a quarter rotation?

nah its not, normally they'll give you the time for a whole revolution. But you have to take a quarter of this time as the greatest change in flux is every quarter rotation.

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ElectricalEng@Monash (2nd year)

kenhung123

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Re: Change in time
« Reply #4 on: August 04, 2010, 01:57:34 pm »
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Thanks guys
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methodsman

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Re: Change in time
« Reply #5 on: August 04, 2010, 10:53:21 pm »
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Quote from: crappy on August 04, 2010, 12:23:47 am
Quote from: kenhung123 on August 03, 2010, 10:59:32 pm
In the EMF equation, is delta t the time taken for a quarter rotation?

nah its not, normally they'll give you the time for a whole revolution. But you have to take a quarter of this time as the greatest change in flux is every quarter rotation.


This is true..If only i hadn't forgotten this in last year's  unit 4 exam ):
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