A single-phase source delivers power to three loads that are connected in parallel: (i) a resistive heater drawing 18 kW, (ii) a squirrel cage motor drawing 15 kVA at 0.92 power factor lagging, and (iii) a synchronous motor operating at 11 kW shaft power¹ (with 90% efficiency) and 0.95 power factor leading. • Draw the power triangle for each of the three parallel connected loads. • Determine the average power, reactive power and apparent power delivered by the source. Draw the source power triangle.

A single-phase source delivers power to three loads that are connected in parallel: (i) a resistive heater drawing 18 kW, (ii) a squirrel cage motor drawing 15 kVA at 0.92 power factor lagging, and (iii) a synchronous motor operating at 11 kW shaft power¹ (with 90% efficiency) and 0.95 power factor leading. • Draw the power triangle for each of the three parallel connected loads. • Determine the average power, reactive power and apparent power delivered by the source. Draw the source power triangle.

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

Chapter2: Fundamentals

Section: Chapter Questions

Problem 2.24P: A source supplies power to the following three loads connected in parallel: (1) a lighting load...

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