Three loads are connected in parallel across a 1400-V rms, 60-Hz single-phasesupply as shown in Figure 2.8.Load 1: Inductive load, 125 kVA at 0.28 power factor.Load 2: Capacitive load, 10 kW and 40 kvar.Load 3: Resistive load of 15 kW.1400 V(a) Find the total kW, kvar, kVA, and the supply power factor.112(b) A capacitor of negligible resistance is connected in parallel with the above loadsto improve the power factor to 0.8 lagging. Determine the kvar rating of this ca-pacitor and the capacitance in uF.133

Given circuit is,Asked to find,Total Active, reactive and apparent power, supply power…

Three loads are connected in parallel across a 1400-V rms, 60-Hz single-phase supply as shown in Figure 2.8. Load 1: Inductive load, 125 kVA at 0.28 power factor. Load 2: Capacitive load, 10 kW and 40 kvar. Load 3: Resistive load of 15 kW. (a) Find the total kw, kvar, kVA, and the supply power factor. 1400 V 14 1 12 2 (b) A capacitor of negligible resistance is connected in parallel with the above loads to improve the power factor to 0.8 lagging. Determine the kvar rating of this ca- pacitor and the capacitance in uF. 3 13

Three loads are connected in parallel across a 1400-V rms, 60-Hz single-phase supply as shown in Figure 2.8. Load 1: Inductive load, 125 kVA at 0.28 power factor. Load 2: Capacitive load, 10 kW and 40 kvar. Load 3: Resistive load of 15 kW. (a) Find the total kw, kvar, kVA, and the supply power factor. 1400 V 14 1 12 2 (b) A capacitor of negligible resistance is connected in parallel with the above loads to improve the power factor to 0.8 lagging. Determine the kvar rating of this ca- pacitor and the capacitance in uF. 3 13

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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Concept explainers

Maximum power transfer theorem

A resistive load will consume maximum power from a network when the load resistance is equal to the resistance of the network as viewed from the open-circuit terminals, with all energy sources removed leaving only the internal resistances. Physicist Moritz von Jacobi introduced the maximum power transfer theorem in 1940. Therefore, this theorem is also known as Jacobi's law.

Question

Three loads are connected in parallel across a 1400-V rms, 60-Hz single-phase
supply as shown in Figure 2.8.
Load 1: Inductive load, 125 kVA at 0.28 power factor.
Load 2: Capacitive load, 10 kW and 40 kvar.
Load 3: Resistive load of 15 kW.
1400 V
(a) Find the total kW, kvar, kVA, and the supply power factor.
1
12
(b) A capacitor of negligible resistance is connected in parallel with the above loads
to improve the power factor to 0.8 lagging. Determine the kvar rating of this ca-
pacitor and the capacitance in uF.
13
3

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Step 2: (a) Finding the total active, reactive and apparent power

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Step 3: (b) Finding the capacitance required to improve power factor to 0.8 lagging,

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