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shermaine
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Joined: 24-March 04
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shermaine

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1 Apr 2004
Hello,

How do i analysis the induction motor curve?
Is my curve correct for analysising?
Pls advise.
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Attached File  Pic__1.bmp ( 924.76K ) Number of downloads: 86
 
1 Apr 2004
How do i analysis the curve as attached?
Is my curve correct? Pls advise.
Thanks.
30 Mar 2004
Hello,

Where can i find the charcteristics curve information of torque verus slip, efficiency verus output power and power factor verus output power? Are torque, efficiency and power factor plotted on the x-axis side? Pls advise.
How do i go about analysising the curve? Pls advise. Thanks.
27 Mar 2004
(1) How do we analysis a motor performance under load conditions?
(2) Can i say that if for a no-load speed control by varying supply frequency, the volatge will be reduced or increase according to the frequency.....Normally, what's the percentage of changes? Let say i got a motor at speed 50hz and voltage at 220Vspeed=1415 rpm. Then when i reduced the frequency to 10hz....the voltage becomes 72.6v and speed is 299rpm....How do i know the pecentage of drop?
Pls advise.Thanks.
25 Mar 2004
Any one can advise me on that.
(1) Why is the no-load input current and power as a percentage of their full(rated)values recorded are considerably
higher than those of the transformer?

(2) Estimate the starting current of the motor(as a percentage of its rated value) when it is started at rated voltage.
How can the starting current be reduced to an acceptable value in practice.
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