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1631 articles for “Abstractive”
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Prediction of Transformer Oil Parameters Using UV/VIS Spectroscopy Graphs
Abstract: AbstractUltraviolet–visible rays (UV/VIS) spectroscopy is a method based on a spectrum, which forms a graph between radiations absorbed by the material and the wavelength of the radiations. UV/VIS spectroscopy is able to tell the impurities or decay contents present in any sample material. In this paper, we have used data collected from various tests performed on the transformer oil samples and compared these results with the UV/VIS spectroscopy results. This …
Published in Trends in Electrical Engineering · Vol. 5, Issue 2, 2015 · pp. 35–41 Read article
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Application of Nondominated Sorting Genetic Algorithm for Multiobjective Optimal Design of Distribution Transformer
Abstract: AbstractIn today’s competitive environment, transformer manufacturers are faced with the exigent task of yielding optimum performance at lowest cost. Considering the aspect of energy shortage and increase in its cost, the complexity of achieving the optimal balance between transformer manufacturing costs and transformer performance is a herculean task, demanding great amount of attempts to reach satisfactory results. To cater with the problem of minimizing transformer losses and cost simultaneously, this …
Published in Trends in Electrical Engineering · Vol. 6, Issue 3, 2016 · pp. 44–57 Read article
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A New Approach to the Laplace-Domain Transient Analysis of Non-Uniform Lines with Application to Power Line Towers
Abstract: Abstract:This paper presents a new technique for the Laplace-domain analysis ofthe electromagnetic transients in non-uniform lines with special consideration of high voltage power line towers. The derived partial differential equations governing the voltage and current distributions, as functions of both the location and time, are solved by an efficient Mathematica computercode based on parametric functions. The applicability of the proposed direct distributed-parameter simulation is demonstrated. Theresults are in good agreement …
Published in Trends in Electrical Engineering · Vol. 9, Issue 3, 2019 · pp. 1–10 Read article
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Cutting Tool for Accurate Cutting of PVC Pipes
Abstract: An abstract describing a PVC pipe cutting tool based on Nichrome 80 wire is provided. The cutting tool consists of a frame, a handle, and a high-resistance nichrome 80 cutting wire that generates heat when an electrical current passes through it. The wire is mounted between two fixed posts on the frame and is powered by a battery-operated electrical source. All the user has to do is hold the handle …
Published in Trends in Machine design · Vol. 10, Issue 3, 2023 · pp. 17–28 Read article
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Detection of Air Gap Eccentricity Faults Using Finite Element Analysis (FEA) in BLDC Motors
Abstract: Abstract: - Detection of eccentricity faults has been feasible using physical and vibrational parameters. It is essential to detect and diagnose such faults at the early stage through measurement and monitoring of changes in the magnetic flux of the BLDC motor in the motor windings and stator slots. In this paper, brushless dc motor and its stator, rotor and windings are designed using FEA method .Changes in magnetic flux of …
Published in Trends in Mechanical Engineering & Technology · Vol. 8, Issue 2, 2018 · pp. 1–5 Read article
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A Review on working principle of temperature sensors
Abstract: AbstractTo recognise and respond to electrical or optical signals, intelligent sensors are frequently utilised. Everyday activities include the usage of sensors. Sensors help the environment around us monitor and report more effectively. They are designed to improve human lives in almost every area and make them far more accessible. They are utilised in homes, residences, malls, hospitals, and smartphones. Different kinds of sensors are employed in daily life. The workings …
Published in Trends in Mechanical Engineering & Technology · Vol. 12, Issue 2, 2022 · pp. 21–25 Read article
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UNDERGROUND CABLE FAULT DETECTION CAR
Abstract: Abstract:-Underground cables along with additional buried assistance can be identified and examinedusing an apparatus known as a cable detector. This is carried out by passing a signal into the earth andthen receiving it back through an antenna. Utilising the received signal endurance, the exact positionand depth of the underground question are found. In doing mining and construction work, this helpsprevent unintended injuries. There are numerous different types of underground cable …
Published in Trends in Mechanical Engineering & Technology · Vol. 13, Issue 1, 2023 · pp. 17–21 Read article
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Performance Analysis of 160 Channel WDM System with EDFA Amplifier
Abstract: AbstractErbium Doped Fiber Amplifier (EDFA) amplifiers are popularly used in wavelength division multiplexing (WDM) system to compensate attenuation and dispersion. The performance of EDFA depends on various parameters such as, EDFA length, Er+3 doping concentration, active fiber length, pump power, pumping wavelength etc. This paper analyzed the performance of EDFA with counter pumping and co-pumping varying the EDFA length, pump power and Er+3 doping concentration and optimized the values for …
Published in Trends in Opto-electro & Optical Communication · Vol. 7, Issue 3, 2017 · pp. 25–34 Read article
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Investigations with WDM Network using Optical Cross Connects
Abstract: AbstractOptical cross-connects are key part of the wavelength division multiplexed based optical communication networks. Accordingly, this paper is focused on the performance evaluation for the optical cross-connects. Here, WDM system for the non-return to zero with 100 GHz channel to channel spaced network has been designed. The optical link’s performance has been numerically simulated and successfully explored for the numerous key design parameters at 20 Gbps data rate. Investigations inferred …
Published in Trends in Opto-electro & Optical Communication · Vol. 7, Issue 3, 2017 · pp. 1–6 Read article
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Design of Ultrafast Optical Full Subtractor Link and Performance Analysis
Abstract: AbstractThis article illustrates proposed optical full subtractor schematic through SOA-MZI, yield borrow and difference outputs concurrently. The objective has been accomplished by exploiting nonlinear attributes with SOA. Numerical simulations have been executed and craving optical subtractor output waveforms have been verified at 100 Gbps data rate. Optimization criterion for the design’s performance measurement is taken as Q-factor and the extinction ratio factor. The subtractor output difference and borrow outcomes with …
Published in Trends in Opto-electro & Optical Communication · Vol. 7, Issue 3, 2017 · pp. 7–20 Read article
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IOT Door Monitoring System using Android Application
Abstract: AbstractThis paper presents the block diagram and working of an internet of things (IOT) door monitoring system using android application. The Android application used in this system is Blynk Application which has a platform with IOS and Android apps to control Arduino and Raspberry Pi over the Internet. It's a digital dashboard where we can build a graphic interface for our project by simply dragging and dropping widgets. This application …
Published in Trends in Opto-electro & Optical Communication · Vol. 7, Issue 3, 2017 · pp. 21–24 Read article
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Heterogeneous Spectrum Sensing in Cognitive Radio Network using Enhanced Energy Detection and Matched Filter
Abstract: AbstractOne of the most predominant aspect in cognitive radio networks is spectrum sensing which allows a secondary user (unlicensed user) to detect the presence or absence of a primary user (licensed user). A number of sensing techniques have been proposed in the past. In order to achieve a high spectrum efficiency, the compatibility of the common spectrum detection techniques primarily used such as energy detection and matched filter are employed …
Published in Trends in Opto-electro & Optical Communication · Vol. 7, Issue 3, 2017 · pp. 35–42 Read article
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Study of Multiple Input Multiple Output Free Space Optical Terrestrial Link
Abstract: AbstractAtmospheric turbulence causes mitigation in the performance of the Free Space Optical Link (FSO) transmission. The performance changes due to scintillation. To reduce the effect of scintillation, we have employed a Multiple Input Multiple Output (MIMO) FSO link which gives better performance as compared to Single Input Single Output (SISO) FSO link. We have combined the detector output with different combining techniques i.e. Selection Combining (SC), Equal Gain Combining (EGC) …
Published in Trends in Opto-electro & Optical Communication · Vol. 8, Issue 1, 2018 · pp. 25–29 Read article
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Interface Engineering of Graphene Multi-Junction InGaP/GaAs/InGaAs/Ge Solar PVC
Abstract: AbstractThe main impediment faced by solar Photo-Voltaic Cell (PVC) is the excitation of charge carriers by high and low energy photons to make them reach the conduction band as this superintends the output device current. To enhance the device current, intermediate engineering of solar PVC is the most prominent strategy. An Inter-Mediate Layer (IML) serves as a spectrally selective layer between the muti-junctions for tandem solar cell. This research work …
Published in Trends in Opto-electro & Optical Communication · Vol. 8, Issue 1, 2018 · pp. 1–7 Read article
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Inter-satellite Optical Wireless Communication (IsOWC) System Design: A Study
Abstract: AbstractLaser communication links in space are attractive alternatives to present day microwave links. Space communication as employed in satellite to satellite link is traditionally performed using microwaves. High capacity inter-satellite communication crosslinks will permit more efficient and more reliable operation of future satellite systems. The mass, power consumption and size of optical transceiver module will be smaller than that of a microwave transceiver. On the other hand, inter-satellite communication is …
Published in Trends in Opto-electro & Optical Communication · Vol. 8, Issue 1, 2018 · pp. 20–24 Read article
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Smart Bin Using GSM Modem
Abstract: AbstractIn the modern era, day-by-day urbanization has increased swiftly and waste production is also increasing day-by-day in the cities. Waste management has emerged as a major challenge for the cities. By the help of this paper we can achieve this good cause. In this paper, we are presenting the idea of smart bin which is based on Arduino and GSM modem Ultrasonic sensor is interfaced with GSM modem. Ultrasonic sensor …
Published in Trends in Opto-electro & Optical Communication · Vol. 8, Issue 1, 2018 · pp. 16–19 Read article
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Performance Comparison of FBG as Dispersion Compensator with Different Apodization in an Optical Fiber Link
Abstract: AbstractNowadays, optical communication is a popular technique to transmit the data. In daily life, we share our useful data by using optical network but dispersion is the main performance limiting factor. However, the compensation of dispersion by dispersion compensating fiber (DCF) and fiber Bragg grating (FBG) can boost the system significantly. This proposed work investigates and analyzes the performance of optical transmission system at 1550 nm using FBG as dispersion …
Published in Trends in Opto-electro & Optical Communication · Vol. 8, Issue 2, 2018 · pp. 6–12 Read article
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Reliability Modeling, Performance and Cost-Benefit Analysis of Optical Fiber Network in DCRUST
Abstract: AbstractThis paper includes the survey of optical fiber network in DCRUST and its reliability modeling aspects to evaluate reliability of that optical fiber network. Model in this paper has an operative unit which is optical fiber cable and a hotstandby unit which is an optical fiber ring provided as a redundant fiber in DCRUST. This protection path is necessary in optical fiber to reduce the wastage of time and to …
Published in Trends in Opto-electro & Optical Communication · Vol. 8, Issue 1, 2018 · pp. 8–15 Read article
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Simulation of Electric Field Induced by Electromagnetic Radiation on Spherical Nanoparticles
Abstract: AbstractIn this article, the interaction of light and matter of nanoparticles is simulated for the electric field induced by electromagnetic radiation on spherical nanoparticles. The absorption, scattering and extinction efficiencies are demonstrated for initial wavelength of the incident of light from 300 nm to the final wavelength at 900 nm range for the silver material of 250 nm (spherical nanoparticles) radius with 1.0 refractive index. These optical properties vary according …
Published in Trends in Opto-electro & Optical Communication · Vol. 8, Issue 2, 2018 · pp. 20–24 Read article
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Improved Low Confinement Photonic Crystal Fiber with Ultra Flattened Dispersion
Abstract: AbstractIn this study, to obtain lower value of dispersion with flatness for wideband, more complicated design will be proposed with multiple-hole diameter and shapes. Confinement loss is also reduced by increasing the number of rings. We optimized cladding region in which there are holes of different diameter and shapes. Numerical investigation shows that value of confinement loss is very low -0.00116 dB/Km and ultra-flat dispersion over wideband at operating frequency …
Published in Trends in Opto-electro & Optical Communication · Vol. 8, Issue 2, 2018 · pp. 1–5 Read article