Whether ceramic and polymeric materials contain dislocations or not should be determined. Concept Introduction: Line imperfections in the perfect crystal lead to the dislocation in the crystals. Dislocations are types of defects in the crystal. The two basic types of dislocations are edge and screw dislocations. There is also a third type called mixed dislocations. Edge dislocation is easy to see in a lattice as an extra half-plane of atoms. Since, the defective points are produced due to dislocation in the line this is called a line defect. As compared to the edge dislocation, the screw dislocation is hard to visualize. It also results from shear stress, but the movement of defect line is perpendicular to the stress direction.

Question

Please answer all questions 1. Calculate the magnitude (in RMS) of the current through R1 2. Calculate the magnitude (in RMS) of the current through R2. Simulation 1. Construct the circuit in Figure 2 in the Circuit JS simulator. Note that transformers in Circuit JS may be unstable. It is suggested to draw them by clicking from the bottom left corner to the top right corner and refresh your simulation before taking a measurement. 2. Perform a simulation, displaying the voltage across the voltage source, the current through R1, and the current through R2 in a “stacked” scope. Display the RMS average for each trace. Include a screenshot. Analysis 1. Compare the simulation results for the currents through R1 and R2. What is the percentage difference between the calculated and simulated value for each? Comment on why there may be a discrepancy.

Answer 1

Question

Chapter 4, Problem 4.31P

Interpretation Introduction

Interpretation:

Whether ceramic and polymeric materials contain dislocations or not should be determined.

Concept Introduction:

Line imperfections in the perfect crystal lead to the dislocation in the crystals.

Dislocations are types of defects in the crystal. The two basic types of dislocations are edge and screw dislocations. There is also a third type called mixed dislocations.

Edge dislocation is easy to see in a lattice as an extra half-plane of atoms. Since, the defective points are produced due to dislocation in the line this is called a line defect. As compared to the edge dislocation, the screw dislocation is hard to visualize. It also results from shear stress, but the movement of defect line is perpendicular to the stress direction.

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