Transformers lab report - T ransformers Group Lab Report...

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Transformers Group Lab Report by: Joe Doyle Ryan Mason Artem Boyko Performed on Feb. 24 2009
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Part A In Part 2a our measured DC R primary was .7 and R secondary was 46m . In order to obtain these values we used the 4 terminal method. This method was preferred over using a DMM because it is typically more accurate for making small measurements. In order to conduct the 4 terminal method we induced a current in each coil and made measurements for voltage and current. With these two values we were able to calculate R primary and R secondary . The following is our raw and derived data: Vp(V) Ip(A) Rp(Ohms)=Vp/ Ip 3.5 5 .7 Vs(V) Is(A) Rs(Ohms)=V
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s/Is 0.345 5 46m Part B 2B 2C (please note that VI is never lower than P, something wrong occurred with experiment) Vp(V ) Ip(A ) Vs(V ) Po(W) 10 - 3.25 - 20 - 5.48 - 30 - 7.61 - 40 .04 9.74 2 50 .05 11.98 3 60 .05 13.96 4 70 .06 16.12 5 80 .07 18.23 6 90 .09 20.37 7 100 .11 22.57 9 110 .15 24.5 10 120 .21 26.65 11 130 .28 28.63 13 139 .37 30.62 15 I
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This document was uploaded on 12/03/2009.

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Transformers lab report - T ransformers Group Lab Report...

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