18. A 10-kVA, 2400/240 V, single-phase transformer has the followingresistances and leakage reactances: R1 = 3 N; R2 = 0.03 N; X; =15 2; X2 = 0.15 N. Find the primary voltage required to produce240 V at the secondary terminals at full load, when the load powerfactor is 0.8 pf leading.C. 2355.8 VD. 2388.3 VA. 2369.5 VB.2347.8 V

Answered: Image /qna-images/answer/affd3a43-b88e-4f6d-9db6-4ae19199d726.jpg

18. A 10-kVA, 2400/240 V, single-phase transformer has the following resistances and leakage reactances: R = 3 2; R2 = 0.03 0; X; = 15 2; X2 = 0.15 Q. Find the primary voltage required to produce 240 V at the secondary terminals at full load, when the load power factor is 0.8 pf leading. A. 2369.5 V C. 2355.8 V D. 2388.3 V B.2347.8 V

18. A 10-kVA, 2400/240 V, single-phase transformer has the following resistances and leakage reactances: R = 3 2; R2 = 0.03 0; X; = 15 2; X2 = 0.15 Q. Find the primary voltage required to produce 240 V at the secondary terminals at full load, when the load power factor is 0.8 pf leading. A. 2369.5 V C. 2355.8 V D. 2388.3 V B.2347.8 V

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 3.4P: A single-phase 100-kVA,2400/240-volt,60-Hz distribution transformer is used as a step-down...

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The transformer of Problem 3.16 is supplying a rated load of 50 kVA at a rated secondary voltage of 240 V and at 0.8 posr factor lagging. Neglect the transformer exciting current. (a) Determine the input terminal voltage of the transformer on the high-voltage side. (b) Sketch the corresponding phasor diagram. (c) If the transformer is used as a step-down transformer at the load end of a feeder whose impedance is 0.5+j2.0, find the voltage VS and the power factor at the sending end of the feeder.
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