Are my Calculations on these two questions correct? I feel like I'm off somewhere? A 450KVA single-phase transformer has a turns ratio of 15/60. The primary winding is connected to33000V, 50HZ. supply. Calculate:a. the secondary voltage on no loadb. the approximate values of the primary and secondary currents on full load.-» Single Phase Transfaramer-> S= ASOkva-> Tun Ratio n=N2->60-> Primary winding VP = 33000V,-> Freguancy{ = 50 Hz%3DVpa) we KnowVsSo Vs = 4 Vp = 4x33000 = 132000V % 132 Kv%3Dgiving secondary vortage (Vs) = 132 kvb) Primary sSileIpニ。CUsrent4SO103= 13.6363AVP33,03secondeery Side cullet.45016-3132 10-3Is == 3.409A A 15KVA single-phase transformer, for 10000V/440V at no load, has resistances and leakage reactanceas follows. Primary winding: resistance 42, reactance 162. Secondary winding: resistance 0.152,reactance 0.45Q.Determine the approximate value of the secondary voltage at full load, 0.85 power factor (lagging),when the primary supply voltage is 10000V.Ignore core resistance and magnetization reactance.-> Singie Phase 1runs Folme-> S='15kva→ 10'000 /44OVIsR,Jx,0.15 JO.45Vs2(440R, =100001x 4 = 7.744,°440=(42)x 16= 0030976 rl000.440V =X 10000 = 440V10000If Power Factes Of Load =085(1aging)Ø = Cos Co85) = 31.7883°ISo00at Full Load curent |Isd =SI=34.09A440So Is = 34.09<-31.788°Agiving,Vs = Vp'- (R,+o.15+j(x,+o.45) Iş* 440-(>,74,340.15+jco.03097640.45) 34.094 - 36.56°to.-giving Secondaty Side vartage =425.974 <-1.3}'

(1) The first question is completely correct in regards to calculation and numerical values. (2) In…

A 450KVA single-phase transformer has a turns ratio of 15/60. The primary winding is connected to 33000V, 50HZ. supply. Calculate: a. the secondary voltage on no load b. the approximate values of the primary and secondary currents on full load. » Single Phase TransFarmer -> S=ASOkva -> TUIA Ratio n= -> %3D 60 4[60 -> Primary winding VP = 33000v, > Fregvancy f = 50 Hz a) we Know Vs ニ So Vs = 4Vp = 4x33000 = 132000V ã 132KV gining secondary vatage (Vs) = 132 kp b) Primary siole エpニア CUsrent 4 SO10-3 ニ VP = 13.6363A 33, secoundary Side cullent. 4S016-3 132 10-3 エs Is = V = 3.409A

A 450KVA single-phase transformer has a turns ratio of 15/60. The primary winding is connected to 33000V, 50HZ. supply. Calculate: a. the secondary voltage on no load b. the approximate values of the primary and secondary currents on full load. » Single Phase TransFarmer -> S=ASOkva -> TUIA Ratio n= -> %3D 60 4[60 -> Primary winding VP = 33000v, > Fregvancy f = 50 Hz a) we Know Vs ニ So Vs = 4Vp = 4x33000 = 132000V ã 132KV gining secondary vatage (Vs) = 132 kp b) Primary siole エpニア CUsrent 4 SO10-3 ニ VP = 13.6363A 33, secoundary Side cullent. 4S016-3 132 10-3 エs Is = V = 3.409A

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.9P

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