9- An 11,000/230-V, 150-kVA, 50-Hz, 1-phase transformer has a core loss of 1.4 kW and full-load Cu loss of 1.6 kW. Determine (a) the kVA load for maximum efficiency (b) the efficiency at half full-load at 0.8 power factor lagging.

9- An 11,000/230-V, 150-kVA, 50-Hz, 1-phase transformer has a core loss of 1.4 kW and full-load Cu loss of 1.6 kW. Determine (a) the kVA load for maximum efficiency (b) the efficiency at half full-load at 0.8 power factor 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 3.11P: For the transformer in Problem 3.10. The open-circuit test with 11.5 kV applied results in a power...

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Concept explainers

Single Phase Transformer

A single-phase transformer is a type of power transformer. It is an electrical device that accepts converts the single phase alternating power into single phase alternating power. In this power conversion the voltage is stepped up or down. If the voltage is stepped up, the current will be stepped down and if the voltage is stepped down, the current will be stepped up.

Question

9- An 11,000/230-V, 150-kVA, 50-Hz, 1-phase transformer has a core
loss of 1.4 kW and full-load Cu loss of 1.6 kW. Determine (a) the
kVA load for maximum efficiency (b) the efficiency at half full-load
at 0.8
power factor lagging.

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