2. Two balanced three-phase loads are connected in parallel. Load 1 draws 20 kW at a lagging power factor of 0.85; Load 2 draws 25 KW at a lagging power factor of 0.5. The line voltage at the terminals at the load is 440 V. The load terminals are connected to the source terminals by means of cables which have an impedance of 1 + j3 ohms each. Calculate the 1ine voltage at the terminals of the source. a. 795 V

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 2.44P: Two balanced three-phase loads that are connected in parallel are fed by a three-phase line having a...
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2. Two balanced three-phase loads are connected in parallel.
Load 1 draws 20 kW at a lagging power factor of 0.85: Load
2 draws 25 kW at a lagging power factor of 0.5. The line
voltage at the terminals at the load is 440 V. The load
terminals are connected to the source terminals by means of
cables which have an impedance of 1 + j3 ohms each.
Calculate the line voltage at the terminals of the source.
a. 795 V
b. 805 V
. 770 V
d. 788 V
3. A three-phase, 339.4 has a delta connected load with ZAB =
10/10°, ZBc
10/30° AND 2 ZCA - 15/-30° ohms. Find the
current in line A.
a. 49.23 A
b. 64.18 A
c. 23.83 A
d. 54.72 A
Transcribed Image Text:2. Two balanced three-phase loads are connected in parallel. Load 1 draws 20 kW at a lagging power factor of 0.85: Load 2 draws 25 kW at a lagging power factor of 0.5. The line voltage at the terminals at the load is 440 V. The load terminals are connected to the source terminals by means of cables which have an impedance of 1 + j3 ohms each. Calculate the line voltage at the terminals of the source. a. 795 V b. 805 V . 770 V d. 788 V 3. A three-phase, 339.4 has a delta connected load with ZAB = 10/10°, ZBc 10/30° AND 2 ZCA - 15/-30° ohms. Find the current in line A. a. 49.23 A b. 64.18 A c. 23.83 A d. 54.72 A
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