Q2: A 4000/400 V, 10 kVA transformer has the following constants: Primary and secondary winding resistances of 13 Ω and 0.15 Ω respectively Leakage reactance referred to primary is 45 Ω Resistance of equivalent exciting circuit referred to primary, R0 = 12k Ω Reactance of equivalent exciting circuit referred to primary, X0 = 6k Ω What would be the reading of the instruments when the transformer is connected for the open-circuit and short-circuit tests? Compute the voltage regulation for full load at 0.8 p.f. lagging.

Q2: A 4000/400 V, 10 kVA transformer has the following constants: Primary and secondary winding resistances of 13 Ω and 0.15 Ω respectively Leakage reactance referred to primary is 45 Ω Resistance of equivalent exciting circuit referred to primary, R0 = 12k Ω Reactance of equivalent exciting circuit referred to primary, X0 = 6k Ω What would be the reading of the instruments when the transformer is connected for the open-circuit and short-circuit tests? Compute the voltage regulation for full load at 0.8 p.f. lagging.

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 3.34MCQ: Consider Figure 3.25 of the text for a transformer with off-nominal turns ratio. (i) The per-unit...

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