Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN: 9780133923605
Author: Robert L. Boylestad
Publisher: PEARSON
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Three Phase Induction Motor
The induction motor is an electric motor that runs on AC (alternating current) and it is of two type single phase motor that work on single-phase power supply and three-phase motor that work on three-phase power supply.
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SYNCHRONOUS GENERATOR

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Field curent (A) Your answer 2. What is the efficiency of the generator at these conditions? * Your answer Another identical delta-connected load is to be paralleled with the first one. What is the new terminal voltage after the load has been added? * Your answer
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Transcribed Image Text:Field curent (A) Your answer 2. What is the efficiency of the generator at these conditions? * Your answer Another identical delta-connected load is to be paralleled with the first one. What is the new terminal voltage after the load has been added? * Your answer
1. A 13.8 kV, 50-MVA, 0.9 p.f., 60 Hz, four pole, Y-connected synchronous generator has a synchronous reactance of 2.5 ohms, and an armature resistance of 0.2 ohm. At 60 Hz, its friction and windage losses are 1 MW, and its core losses are 1.5 MW. The field circuit has a dc voltage of 120 V, and the maximum field current is 5A. The current of the field circuit is adjustable over the range from 0 to 10 A. The OCC of this generator is shown in the figure. What will the terminal voltage of this generator be if it is connected to a delta- connected with an impedance of 24 cis 25 deg ohms? * Open-circuit characteristic 20 18 16 14 12 10 1 2 3 4 5 7 10 Field cument (A) 00 4. 2. Open-circuit voltage (kV)
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Transcribed Image Text:1. A 13.8 kV, 50-MVA, 0.9 p.f., 60 Hz, four pole, Y-connected synchronous generator has a synchronous reactance of 2.5 ohms, and an armature resistance of 0.2 ohm. At 60 Hz, its friction and windage losses are 1 MW, and its core losses are 1.5 MW. The field circuit has a dc voltage of 120 V, and the maximum field current is 5A. The current of the field circuit is adjustable over the range from 0 to 10 A. The OCC of this generator is shown in the figure. What will the terminal voltage of this generator be if it is connected to a delta- connected with an impedance of 24 cis 25 deg ohms? * Open-circuit characteristic 20 18 16 14 12 10 1 2 3 4 5 7 10 Field cument (A) 00 4. 2. Open-circuit voltage (kV)
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