Primary voltage and transformers

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SUMMARY

The primary voltage required to achieve a secondary current of 10 A in a transformer setup is determined to be 800 V. This conclusion is based on the established voltage and current ratios of the coils, specifically Np (200), Vp (1200), Is (15), Ns (40), and Vs (240). The relationship IpVp = IsVs was utilized to derive the necessary voltage adjustment. The calculations confirm that maintaining the V/I ratios is essential for accurate transformer operation.

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zebra1707
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Hi physics gurus

Homework Statement



What should the primary voltage be changed to in order to produce a secondary current of 10 A, given that the V / I ratios for the coils do not change?

Current ratios that I have calculated so far are as follows:

Np (200) Vp (1200) Is (15)
Ns (40) = Vs (240) = Ip (3)

Homework Equations



If focusing on just the IpVp = IsVs ratio - then the solution would be...

The Attempt at a Solution



The primary voltage would be changed to 800 V according to my calculation, I would appreciated your advice.

Cheers P
 
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Yes, you are correct
 


Many thanks

Cheers P
 

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