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(b) Explain why a power transformer is ideally designed so that the flux density in the magnetic material is below saturation. (c) A 50 Hz sinusoidal AC voltage source of peak value V, = 340 V delivers power to a resistive load of 50 n. (i) Calculate the average power delivered. (ii) The AC source is now connected to the load via a full wave diode bridge. The turn-on voltage of the diodes is 0.3 V. Calculate the peak voltage across the load and the average voltage across the load. (ii) Explain how a smoothing capacitor can be used to hold up the voltage across the load. Compare the efficiency of the rectifier with and without the smoothing capacitor. (iv) Define "regulation" as applied to the output voltage of a rectifier and explain why an LR filtered rectifier bridge provides better regulation of the load voltage than an RC filtered rectifier bridge.

(b) Explain why a power transformer is ideally designed so that the flux density in the magnetic material is below saturation. (c) A 50 Hz sinusoidal AC voltage source of peak value V, = 340 V delivers power to a resistive load of 50 n. (i) Calculate the average power delivered. (ii) The AC source is now connected to the load via a full wave diode bridge. The turn-on voltage of the diodes is 0.3 V. Calculate the peak voltage across the load and the average voltage across the load. (ii) Explain how a smoothing capacitor can be used to hold up the voltage across the load. Compare the efficiency of the rectifier with and without the smoothing capacitor. (iv) Define "regulation" as applied to the output voltage of a rectifier and explain why an LR filtered rectifier bridge provides better regulation of the load voltage than an RC filtered rectifier bridge.

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
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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(b) Explain why a power transformer is ideally designed so that the flux density in the magnetic material is below saturation. (c) A 50 Hz sinusoidal AC voltage source of peak value V, = 340 V delivers power to a resistive load of 50 n. (i) Calculate the average power delivered. (i) The AC source is now connected to the load via a full wave diode bridge. The turn-on voltage of the diodes is 0.3 V. Calculate the peak voltage across the load and the average voltage across the load. (ii) Explain how a smoothing capacitor can be used to hold up the voltage across the load. Compare the efficiency of the rectifier with and without the smoothing capacitor. (iv) Define "regulation" as applied to the output voltage of a rectifier and explain why an LR filtered rectifier bridge provides better regulation of the load voltage than an RC filtered rectifier bridge.
Transcribed Image Text:(b) Explain why a power transformer is ideally designed so that the flux density in the magnetic material is below saturation. (c) A 50 Hz sinusoidal AC voltage source of peak value V, = 340 V delivers power to a resistive load of 50 n. (i) Calculate the average power delivered. (i) The AC source is now connected to the load via a full wave diode bridge. The turn-on voltage of the diodes is 0.3 V. Calculate the peak voltage across the load and the average voltage across the load. (ii) Explain how a smoothing capacitor can be used to hold up the voltage across the load. Compare the efficiency of the rectifier with and without the smoothing capacitor. (iv) Define "regulation" as applied to the output voltage of a rectifier and explain why an LR filtered rectifier bridge provides better regulation of the load voltage than an RC filtered rectifier bridge.
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