IMPACT : International Journal of Research in Engineering & Technology

15-20

Authors: Thuraya Mansoor Ibrahim

Ac conductivity in the frequency range of 5×103 to5×103 Hz of Phthalocyaninato Aluminum Chloride (PcAlCl) was measured, which consists of frequency dependent and independent parts. The Dc conductivity is attributed to the charge carrier’s transition, between valance and conduction bands, while the Ac conductivity is due to hopping of charge carriers, between the localized sites around Femi level which is an indication of degree of imperfection around Fermi level in the crystal lattice.The number of the hopping sites were estimated, using Webb and William relation 4.7×1020eV-1cm-3.

25-34

Authors: M. Naveen Kumar Sriram Venkatesh & M. Manzoor Hussain

In the present research paper, a 3D CAD model is created using CATIA V5 and exported to Rapid Prototyping machine and, by using Magics software; the facets are removed and sliced into layers. The model is build by layer, with polyamide PA2200 in powder form and sintered by co2 laser. Total of nine (9) Experiments were conducted using taughi design of experiments L9 orthogonal array approach. In present study, by optimizing the processes parameters laser power, Layer thickness and Temperature at three levels each factor and found to be maximum influence, on concentricity are Layer thickness at level 2, Laser Power at level 3 and last temperature at level 2 is +/- 0.030 microns. Main effects of Plots of Analysis of Mean, S/N Ratio single-to-noise with quality index smaller-the-better, regression Analysis and Predicted model are same.

41-46

Authors: Abhishek David John, M. Chithra & V. Jayanthi

With the backdrop of globalization English has become the most widely spoken and accepted language, worldwide. It has also crept into the fields of science and technology and therefore, indispensable for the students pursuing these fields. For engineering students it has off late become very essential to be proficient in English as most corporate and multinational companies have English as their medium of conversation and instruction. The employers also feel that this skill of communicating in English is essential as their job portfolio involves interacting with foreign clients who are only familiar with English. As a measure to ensure students settle down with a secured career, colleges have incorporated English courses which focuses on developing LSRW skills. This article throws light on the importance of LSRW skills for an engineering student, the various aspects involved and steps to improve these skills thereby enabling students to excel in communication in English.