1-ph transformer, 50Hz, core type transformer has square core of 24 cm side. The fluxdensity is I Wb/m². If the iron factor is 0.95, the approximately induced voltage per turnis-a) 6 b) 1112 d) none of the above.2-A transformer has full-load iron loss of 500 W. the iron loss at half-load will be500 W d) none of the above.3-A transformer will have maximum efficiency ata) 125 W b) 250 Wno-load c) 90% loadnone of the aboveKef²a) full-load4-The hysteresis loss in a certain transformer is 40W and the eddy current loss is 50 W(both at 30Hz), then the iron loss at 50 Hz is ---------------. The flux density being thesame.a) 180W 204W c) 302 d) none of the previous.the voltage‒‒‒‒‒‒‒5-The voltage per turn of the high voltage winding of a transformer isper turn of the low voltage winding.a) More than the same as c) less than d) none of the previous

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-ph transformer, 50Hz, core type transformer has square core of 24 cm side. T density is 1 Wb/m². If the iron factor is 0.95, the approximately induced voltage p is 127 a) 6 b) 1112 d) none of the above. --- 2-A transformer has full-load iron loss of 500 W. the iron loss at half-load will be - 500 W d) none of the above. a) 125 W b) 250 W 3-A transformer will have maximum efficiency at no-load c) 90% load none of the above a) full-load 4-The hysteresis Toss in a certain transformer is 40W and the eddy current loss is (both at 30Hz), then the iron loss at 50 Hz is ----. The flux density be Kef² same. a) 180W 204W c) 302 d) none of the previous. the ‒‒‒‒‒‒--- 5- The voltage per turn of the high voltage winding of a transformer is per turn of the low voltage winding.

-ph transformer, 50Hz, core type transformer has square core of 24 cm side. T density is 1 Wb/m². If the iron factor is 0.95, the approximately induced voltage p is 127 a) 6 b) 1112 d) none of the above. --- 2-A transformer has full-load iron loss of 500 W. the iron loss at half-load will be - 500 W d) none of the above. a) 125 W b) 250 W 3-A transformer will have maximum efficiency at no-load c) 90% load none of the above a) full-load 4-The hysteresis Toss in a certain transformer is 40W and the eddy current loss is (both at 30Hz), then the iron loss at 50 Hz is ----. The flux density be Kef² same. a) 180W 204W c) 302 d) none of the previous. the ‒‒‒‒‒‒--- 5- The voltage per turn of the high voltage winding of a transformer is per turn of the low voltage winding.

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 3.26P: A bank of three single-phase transformers, each rated 30MVA,38.1/3.81kV, are connected in Y- with a...

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