A3-Phase,3 Wire secondary distribution system with balanced per phase loads at a,b and e feeding from a 11kV/415 V transformer as shown in fig.2. Determine the following: a. the total voltage drop of the feeder in p.u.; b. the total per phase real power (P); c. the total per phase reactive power(Q); d. the total (3-phase) kVA output of transformer and its load power factor. 415 V 11kV 0.04 + j0.012 0,08 + j0.04£2 0.08 + j0.042 30 A 0.707 lag 40 A UPF 50 A 0.8 lag Fig. 2 (a) 26.56 V (b) 34.3 kW (c) 22.3 KVAR (d) 71.72 kVA, 0.98 lagging None of these (a) 36.56 V (b) 54.3 kW (c) 72.3 KVAR (d) 101.72 kVA, 0.80 lagging (a) 16.56 V (b) 24.3 kW (c) 12.3 KVAR (d) 81.72 kVA, 0.89 lagging
A3-Phase,3 Wire secondary distribution system with balanced per phase loads at a,b and e feeding from a 11kV/415 V transformer as shown in fig.2. Determine the following: a. the total voltage drop of the feeder in p.u.; b. the total per phase real power (P); c. the total per phase reactive power(Q); d. the total (3-phase) kVA output of transformer and its load power factor. 415 V 11kV 0.04 + j0.012 0,08 + j0.04£2 0.08 + j0.042 30 A 0.707 lag 40 A UPF 50 A 0.8 lag Fig. 2 (a) 26.56 V (b) 34.3 kW (c) 22.3 KVAR (d) 71.72 kVA, 0.98 lagging None of these (a) 36.56 V (b) 54.3 kW (c) 72.3 KVAR (d) 101.72 kVA, 0.80 lagging (a) 16.56 V (b) 24.3 kW (c) 12.3 KVAR (d) 81.72 kVA, 0.89 lagging
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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Transcribed Image Text:A3-Phase,3 Wire secondary distribution system with balanced per phase loads at a,b and e feeding from a 11kV/415 V transformer as shown in fig.2. Determine the following:
a. the total voltage drop of the feeder in p.u.;
b. the total per phase real power (P);
c. the total per phase reactive power(Q);
d. the total (3-phase) kVA output of transformer and its load power factor.
415 V
11kV
0.04 + j0.012 0,08 + j0.04£2 0.08 + j0.042
30 A
0.707
lag
40 A
UPF
50 A
0.8 lag
Fig. 2
(a) 26.56 V
(b) 34.3 kW
(c) 22.3 KVAR
(d) 71.72 kVA, 0.98 lagging
None of these
(a) 36.56 V
(b) 54.3 kW
(c) 72.3 KVAR
(d) 101.72 kVA, 0.80 lagging
(a) 16.56 V
(b) 24.3 kW
(c) 12.3 KVAR
(d) 81.72 kVA, 0.89 lagging
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