# 02 - a highly inductive load. If the load current is 60 A...

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Problem Set II Single phase uncontrolled Rectifiers 1-The figure below shows a simple rectifier: Given v s (t) = 2 x230x sin ( ± t ), where ²³ = 2 ² 50: a) Sketch the voltage v d ( ± t) over the load. b) Sketch the voltage over the diode D. c) Calculate the average value, V R . d) Calculate the r.m.s value for the circuit current. 2-For the figure shown below: Given V s ( ± t)=110 2 sin ± t, where ± =377 rad/sec, R=10 ´ ,X l =10 ´ . a) Sketch the voltage v d ( ± t) over the load and v D ( ± t) over the diode. b) Sketch the voltage I o ( ± t) over the load. c) Calculate the conduction angle. d) Calculate V davg ,I oavg .

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3- For the shown circuit; 20V a.c supply, highly inductive load of I d =15A, the delay angle is 60 degrees and assuming forward voltage drops of 1.5V and 0.7V across the diode and free wheeling diode respectively. a) Sketch the voltage across the load, main diode and the supply current b) Calculate the load mean voltage c) Calculate the power losses 4- The circuit shown in the figure is a single phase half wave rectifier supplying
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Unformatted text preview: a highly inductive load. If the load current is 60 A and the supply is 50V, 50 Hz AC with an inductance L s = 0.1 mH, Calculate: a) The average load voltage. b) The reduction of the load voltage due to the supply inductance. c) The load resistance. d) The average current (I D1 ) of the main diode D1. 4- The battery voltage in Figure 2 is 12 V and its capacity is 100 W-h. The average charging current should be I dc = 5A. The supply has an rms voltage of 60V. Calculate a) The conduction angle of the diode. b) The current limiting resistance R. c) The charging time in hours. d) The rectifier efficiency. e) The peak inverse voltage of the diode. 5-For the given circuit: peak to peak voltage is 48 volts, R=20 & , C=1mF, f=60Hz. a) Sketch the load voltage waveform b) Sketch the source current c) Sketch the voltage across the switch d) Obtain the load voltage average value (V d ) e) The peak inverse voltage for the used switch...
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## This note was uploaded on 12/13/2010 for the course MENG mctr701 taught by Professor Ahmed during the Spring '10 term at American University in Cairo.

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02 - a highly inductive load. If the load current is 60 A...

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