(b) A single-phase power source feeds a 180 kVA 20 kV/2.4 kV transformerthrough a line impedance of (38.2 +j140) N. The transformer's equivalentimpedance referred to L.T. side is (0.25 + j1) Q. The load on the transformeris 190 kW at 0.9 pf lagging and 2300 V. Calculate: (i) The voltage at thepower source. (ii) The voltage regulation of the transformer. (iii) Theefficiency of the overall power system.

Answered: Image /qna-images/answer/aba9d89c-7a3e-4529-9a8a-96ca7d594d1f.jpg

(b) A single-phase power source feeds a 180 kVA 20 kV/2.4 kV transformer through a line impedance of (38.2 +j140) 2. The transformer's equivalent impedance referred to L.T. side is (0.25 + j1) N. The load on the transformer is 190 kW at 0.9 pf lagging and 2300 V. Calculate: (i) The voltage at the power source. (ii) The voltage regulation of the transformer. (iii) The efficiency of the overall power system.

(b) A single-phase power source feeds a 180 kVA 20 kV/2.4 kV transformer through a line impedance of (38.2 +j140) 2. The transformer's equivalent impedance referred to L.T. side is (0.25 + j1) N. The load on the transformer is 190 kW at 0.9 pf lagging and 2300 V. Calculate: (i) The voltage at the power source. (ii) The voltage regulation of the transformer. (iii) The efficiency of the overall power system.

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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