Primary voltage and transformers

AI Thread Summary
To achieve a secondary current of 10 A while maintaining constant V/I ratios for the transformer coils, the primary voltage needs to be adjusted. The calculations indicate that the primary voltage should be set to 800 V. This conclusion is based on the relationship defined by the equation IpVp = IsVs. The discussion confirms the accuracy of this calculation. Overall, the focus is on adjusting the primary voltage to meet the desired secondary current.
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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