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Amy 212
Joined: 20 Apr 2008
Posts: 5
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 08 May 2008 0:56 Help please , to convert This .... |
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The is a qusion about phasor Form.
I would like to convertit this formula :-
Y(t)= 4.5 cos (2Π1600t) TO phasor form .
Is there any idea how i can do it ??.
Π = Pi
[/tex]
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flatulent
Joined: 19 Jul 2002
Posts: 4813
Helped: 278
Location: Middle Earth
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| 08 May 2008 1:45 Re: Help please , to convert This .... |
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| Y equals the sine of the quantity and X equals the cosine of the quantity.
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javar
Joined: 17 Apr 2008
Posts: 6
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| 09 May 2008 17:44 Re: Help please , to convert This .... |
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Its simple, the phasor form to Y=4.5cos(2π*1600t) is:
Y= 4.5 ≤ 0° were "≤" indicate phase and 4.5 is the peak value
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js0p
Joined: 11 Apr 2008
Posts: 12
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| 10 May 2008 23:31 Re: Help please , to convert This .... |
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A fasor has 2 explicit variables (amplitude and phase) and 1 implicit(frequency).
So, a fasor is defined for a given frequency. In your case:
Y=4.5cos(2π*1600t)
It's clear that the frequency is 1600Hz, so its fasor will be defined for that frequency. Amplitude is 4.5. The phase has to be defined for a fixed reference point :
For example, suppose that in our system fasors are defined for a sine of frequency 1600Hz. The Y fasor will be amplitude 4.5 phase 90º , because sin(x+90º)=cos(x). If fasors are defined for a cosine, Y fasor will be Y=4.5 amplitude 0 phase.
I hope this helps. Best regards.
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