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Two balanced loads are connected to the three-phase supply via a feeder line as shown in Fig. 1. The input line voltage is 440 V, at 50 Hz and the input power factor PF = 0.55 lagging. The voltage across the load is 420 < 30° V Is Balanced Loads 0.0187 0 j0.164 O Vs V. 440/60° V 440 < 30° V I. Line Voltage LOAD 1 LOAD 2 (DELTA) (STAR) Figure 1. Load 1: 60 kVA at a PF=0.67 lagging. Load 2: 34 kW at a PF=0.48 lagging. Determine: (a) The total load complex power P., Q & SL; (b) The line current h. in polar form3;

Two balanced loads are connected to the three-phase supply via a feeder line as shown in Fig. 1. The input line voltage is 440 V, at 50 Hz and the input power factor PF = 0.55 lagging. The voltage across the load is 420 < 30° V Is Balanced Loads 0.0187 0 j0.164 O Vs V. 440/60° V 440 < 30° V I. Line Voltage LOAD 1 LOAD 2 (DELTA) (STAR) Figure 1. Load 1: 60 kVA at a PF=0.67 lagging. Load 2: 34 kW at a PF=0.48 lagging. Determine: (a) The total load complex power P., Q & SL; (b) The line current h. in polar form3;

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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Question 1 Two balanced loads are connected to the three-phase supply via a feeder line as shown in Fig. 1. The input line voltage is 440 V, at 50 Hz and the input power factor PF = 0.55 lagging. The voltage across the load is 420 < 30° V Is RE Balanced Loads 0.0187 0 j0.164 0 Vs V. 440/60° V 440 < 30° V Line Voltage LOAD 1 LOAD 2 (DELTA) (STAR) Figure 1. Load 1: 60 kVA at a PF=0.67 lagging. Load 2: 34 kW at a PF=0.48 lagging. Determine: (a) The total load complex power P., Q & SL; (b) The line current h. in polar form;
Transcribed Image Text:Question 1 Two balanced loads are connected to the three-phase supply via a feeder line as shown in Fig. 1. The input line voltage is 440 V, at 50 Hz and the input power factor PF = 0.55 lagging. The voltage across the load is 420 < 30° V Is RE Balanced Loads 0.0187 0 j0.164 0 Vs V. 440/60° V 440 < 30° V Line Voltage LOAD 1 LOAD 2 (DELTA) (STAR) Figure 1. Load 1: 60 kVA at a PF=0.67 lagging. Load 2: 34 kW at a PF=0.48 lagging. Determine: (a) The total load complex power P., Q & SL; (b) The line current h. in polar form;
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