5. The infinite bus in Fig. 5 operates at 400 V. Load 1 is an induction motor consuming 100 kW at 0.78 PF lagging, and load 2 is an induction motor consuming 200 kW at 0.8 PF lagging. Load 3 is a synchronous motor whose real power consumption is 150 kW. (a) If the synchronous motor is adjusted to operate at 0.85 pf lagging, what is the transmission line current in this system? (b) If the synchronous motor is adjusted to operate at 0.92 pf leading, what is the transmission line current in this system? (c) Compare the results achieved in (a) and (b) and give comments on that. 100 kW 0.78 PF Ind. motor lagging P P2 Ind. motor 200 kW 0.8 PF lagging Infinite bus Transmission line Synchr. i50 kw Plant motor PF -? Fig. 5

5. The infinite bus in Fig. 5 operates at 400 V. Load 1 is an induction motor consuming 100 kW at 0.78 PF lagging, and load 2 is an induction motor consuming 200 kW at 0.8 PF lagging. Load 3 is a synchronous motor whose real power consumption is 150 kW. (a) If the synchronous motor is adjusted to operate at 0.85 pf lagging, what is the transmission line current in this system? (b) If the synchronous motor is adjusted to operate at 0.92 pf leading, what is the transmission line current in this system? (c) Compare the results achieved in (a) and (b) and give comments on that. 100 kW 0.78 PF Ind. motor lagging P P2 Ind. motor 200 kW 0.8 PF lagging Infinite bus Transmission line Synchr. i50 kw Plant motor PF -? Fig. 5

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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