In the figure given we have u(t)=10- cosøt [V]. We assume the diodes and the A-meter (A) to be ideal. a) Plot the waveform of the current flowing through the A-m in scale. b) What is the reading of the A-m, if it is moving-coil type? A u(t) R1 R2 c) What is the reading of the A-m, if it is moving-iron type? d) Calculate the power factor of the WHOLE structure. 10Ω

In the figure given we have u(t)=10- cosøt [V]. We assume the diodes and the A-meter (A) to be ideal. a) Plot the waveform of the current flowing through the A-m in scale. b) What is the reading of the A-m, if it is moving-coil type? A u(t) R1 R2 c) What is the reading of the A-m, if it is moving-iron type? d) Calculate the power factor of the WHOLE structure. 10Ω

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter59: Motor Startup And Troubleshooting Basics

Section: Chapter Questions

Problem 12SQ: How is a solid-state diode tested? Explain.

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In the figure given we have u(t)=10. cosot [V]. We assume the diodes and the A-meter (A) to be ideal. A u(t) a) Plot the waveform of the current flowing through the A-m in scale. b) What is the reading of the A-m, if it is moving-coil type? c) What is the reading of the A-m, if it is moving-iron type? d) Calculate the power factor of the WHOLE structure. R1 1 R2 102
The three-phase circuit shown in figure 1 is 220 Vrms per phase and 50Hz. Diodes are real. The circuit produces an output shown in Figure 2. Indicate the conduction angle of diode D5. What times does this conduction correspond to? Use the first cycle only (0-360°). to-0 sec.
Suppose we have a 10-V-peak sinusoidal voltage source. Draw the diagram of a circuit that clips off the part of the sinusoid above 5 V and below -4 V. The circuit should be composed of ideal diodes, dc voltage sources, and other components as needed. Be sure to label the terminals across which the clipped output waveform vo(t) appears.
Q5. For the following center tapped transformer, show the waveform across each half of the secondary winding and across Ri, when a 100 V peak sine wave is applied to the primarywinding. What is the PIV rating must the diode have? (Use constant voltage drop model for the Silicon diode) IN4001 Ry OV 10k) D IN4001
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1) How is the diode and zener diode in the electronic circuit and how they work?indicate the differences between them.2) Can a zener diode be used instead of a regular diode? please explain.3) Is it to step down and rectify the 220V AC signal by means of a transformer or to convert 220 V?rectify it and then reduce its value to the desired DC level using a voltage divider circuit?suitable.?4) Bridge type full wave rectification with two diodes full wave rectification using a medium ended transformerCompare the rectifier circuit and list its advantages and disadvantages relative to each other.5) What is the concept of PIV (Peak Inverse Voltage) for rectifier circuits?For which rectifier circuits is this value more important?
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