For a 150 kVA, 2400/240 V transformer, the equivalent circuit parameters are given as R1 = 0.2 Ohm, R2 = 0.002 Ohm X1 = 0.45 Ohm, X 2= 0.0045 Ohm Rc = 10 k Ohm ,Xm = 1.6 k Ohm (as seen from 2400-V side) (a) Draw the circuit model as seen from the HV side (b) Determine the voltage regulation and efficiency when the transformer is supplying full-load at 0.8 lagging p.f. on the secondary side at rated voltage (c) For the conditions specified in (b), calculate also the HV side current and its p.f.

For a 150 kVA, 2400/240 V transformer, the equivalent circuit parameters are given as R1 = 0.2 Ohm, R2 = 0.002 Ohm X1 = 0.45 Ohm, X 2= 0.0045 Ohm Rc = 10 k Ohm ,Xm = 1.6 k Ohm (as seen from 2400-V side) (a) Draw the circuit model as seen from the HV side (b) Determine the voltage regulation and efficiency when the transformer is supplying full-load at 0.8 lagging p.f. on the secondary side at rated voltage (c) For the conditions specified in (b), calculate also the HV side current and its p.f.

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 3.32MCQ

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