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Indicate the relevant changes in transformer performance (output voltage, losses, regulation, no load current, power factor etc) and/or operating limits (maximum voltage and current) for the following changes to a transformer design: (i) A reduction in the magnetising reactance. (ii) An increase in the leakage reactance. (iii) An increase in the iron loss resistance (Rc). (iv) An improved cooling system for the transformer windings

Indicate the relevant changes in transformer performance (output voltage, losses, regulation, no load current, power factor etc) and/or operating limits (maximum voltage and current) for the following changes to a transformer design: (i) A reduction in the magnetising reactance. (ii) An increase in the leakage reactance. (iii) An increase in the iron loss resistance (Rc). (iv) An improved cooling system for the transformer windings

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
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G1=2 G2=4 G3=2 G4=7 G5=2 G6=1 G7=2
Indicate the relevant changes in transformer performance (output voltage, losses, regulation, no load current, power factor etc) and/or operating limits (maximum voltage and current) for the following changes to a transformer design: Q3 (а) (i) A reduction in the magnetising reactance. (ii) An increase in the leakage reactance. (iii) An increase in the iron loss resistance (Rc). (iv) An improved cooling system for the transformer windings Parameter Value Units Хм 1.0 kΩ RC 3.6 8.34 Rieg Xleq Ω 30 Ω Table Q3b (b) A 0.4G5 2 resistance is connected to the secondary winding of a single phase 230 V/12 V transformer with the equivalent circuit parameters shown in Table Q3b. Using this information determine the following: (i) The transformer turns ratio. (ii) The output voltage and output power (W) under load. (iii) The regulation and efficiency under load. (iv) The no load current and power factor.
Transcribed Image Text:Indicate the relevant changes in transformer performance (output voltage, losses, regulation, no load current, power factor etc) and/or operating limits (maximum voltage and current) for the following changes to a transformer design: Q3 (а) (i) A reduction in the magnetising reactance. (ii) An increase in the leakage reactance. (iii) An increase in the iron loss resistance (Rc). (iv) An improved cooling system for the transformer windings Parameter Value Units Хм 1.0 kΩ RC 3.6 8.34 Rieg Xleq Ω 30 Ω Table Q3b (b) A 0.4G5 2 resistance is connected to the secondary winding of a single phase 230 V/12 V transformer with the equivalent circuit parameters shown in Table Q3b. Using this information determine the following: (i) The transformer turns ratio. (ii) The output voltage and output power (W) under load. (iii) The regulation and efficiency under load. (iv) The no load current and power factor.
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