Recent content by peppa

I think I'm on the right track with a) but a little lost with part b) Any help will be much appreciated

Homework Statement 5. A 415V to 11 kV transformer has a rating of 200 kVA. The winding resistance and leakage reactance when referred to the primary are 0.014 Ω and 0.057 Ω respectively. (a) Determine the % regulation of the transformer at 0.8 power factor lagging. (b) In designing a...

Thankyou gneil 'l' was a mistype sorry I will try nodal analysis and post my results

My work folders give no examples of what they ask in the assessments which make them glorified paper weights. I have used this website for most of my learning resources but feel my understanding of certain areas is a little scattered. My thought process for this question was as follows for a)...

Thanks gneil Sorry about the lateness in reply though i am still struggling to confirm my answer If V1 = 415+j0v (415(cos(0)+(jsin(0)) V2 = 0 +j415 (415(cos(90)+(jsin(90)) Then subtract them (V1-V2) in complex form or keep it in polar? I'm struggling with this as i can't seem to find any...

Thank you for your response I'm not sure how to convert these voltages to phasor quantities would it be like this V1 = (415(cos(0)+jsin(0)) - V2 (415(cos(90)+jsin(90)) Though the square root of 2 x 415 is rms volts?

Can anyone confirm how the current was achieved i.e. V1 (sqr2x415cos(100pi t) - V2 (sqr2x415cos(100pi t-90)/ j4 + j6 as I am not sure where to start concerning the voltages?