Industrial electronics finals practice feedback

[Femme_physics]

Hi everyone. The last part of my electronics finals this year is industrial electronics, so I decided to go over the questions in industrial electronics...I don't have final answers in our manual :( so I'd appreciate any feedback here.

Homework Statement

http://img521.imageshack.us/img521/6473/n1n2.jpg

The Attempt at a Solution

http://img831.imageshack.us/img831/7530/kvsqv.jpg

 

[I like Serena]

Luckily by now you can create your own solutions.

I approve.

 

[Femme_physics]

Ah... Great. Looks like I am on the top of my game! Thanks ILS.

 

[Ouabache]

Yes, method & solutions look fine, nice job! Cool handles on your omega
As a double check on part 2, you could also use
$P = I^2R$ on the secondary circuit and solve for R.