A 400-V DB in a factory hall supplies the following 3-phase loads: 12- kVA induction motor load at PF=0.94 lag and wye connected 20- kW inductive heating load at PF=0.90 lag and delta-connected (a) Determine line current phasors of each load.and also total line current phasor. (b) Draw current phasors found in part (a) for only R-phase on the graph given below. (c) Determine the total complex powers S drawn from the source. (d) Determine also the total P and Q components of the complex power.
A 400-V DB in a factory hall supplies the following 3-phase loads: 12- kVA induction motor load at PF=0.94 lag and wye connected 20- kW inductive heating load at PF=0.90 lag and delta-connected (a) Determine line current phasors of each load.and also total line current phasor. (b) Draw current phasors found in part (a) for only R-phase on the graph given below. (c) Determine the total complex powers S drawn from the source. (d) Determine also the total P and Q components of the complex power.
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 2.48P
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Question
A 400-V DB in a factory hall supplies the following 3-phase loads:
12- kVA induction motor load at PF=0.94 lag and wye connected
20- kW inductive heating load at PF=0.90 lag and delta-connected
(a) Determine line current phasors of each load.and also total line current phasor.
(b) Draw current phasors found in part (a) for only R-phase on the graph given below.
(c) Determine the total complex powers S drawn from the source.
(d) Determine also the total P and Q components of the complex power.
Expert Solution
Step 1
Given Data:
VL = 400 V
Sload1 = 12 kVA
Pload2 = 20 kW
Step 2
Answer A
Step 3
Answer B
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