Author Archives: magnaparthi

LED Light Bulbs | Bonded Fin Heat Sink | Production By Liquid Metal Forging

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LEDs won’t burn your hand like some light sources, but they do produce heat. All light sources convert electric power into radiant energy and heat in various proportions. LEDs generate little or no IR or UV, but convert only 20%-30% of the power into visible light; the remainder (70%) is converted to heat that must be conducted from the LED

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Nano-Nuclear Batteries | Beta-Voltaic Power | Tritium Based Energy

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Long-lived power supplies for remote and even hostile environmental conditions are needed for space and sea missions. Nuclear batteries can uniquely serve this role. In spite of relatively low power, the nuclear battery with packaging can have an energy density near a thousand watt-hours per kilogram, which is much greater than the best chemical battery. It would reason that small

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Self Driving Car Technology | Autonomous Car | Car Of The Future

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An autonomous vehicle is fundamentally defined as a passenger vehicle that drives by itself. An autonomous vehicle is also referred to as an autopilot, driverless car, auto-drive car, or automated guided vehicle. In the future, automated systems will help to avoid accidents and reduce congestion. The future vehicles will be capable of determining the best route and warn each other

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Frequently Asked Interview Questions | 10 Job Interview Questions | Mechanical Engineering Test Questions

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1. A hollow shaft of same cross-section area as solid shaft transmits A. Same torque B. Less torque C. More torque D. Unpredictable Answer: B. Less torque 2. In a cantilever beam, maximum deflection occurs at where A. Bending moment is zero B. Bending moment is maximum C. Shear force is zero D. Slope is zero Answer: A. Bending moment

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TIG Welding | GTAW Welding | Arc Welding Equipment’s

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Tungsten Inert Gas (TIG) or Gas Tungsten Arc welding (GTAW): It is an arc welding process wherein coalescence is produced by heating the job with an electric arc struck between a tungsten electrode and the job. The electrodes used in this process are made of either Tungsten or Thoriated Tungsten. Thoriated Tungsten electrodes run cooler than plain tungsten electrodes and

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Submerged Arc Welding SAW | Submerged Arc Welding Deposition Rates | Submerged Arc Welding Flux Composition

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Submerged arc welding: (SAW) In submerged arc welding also known as hidden arc welding, submerged melt welding, or sub-arc welding the arc is struck between a metal electrode and the work piece under a blanket of granular flux. The welding action takes place under the flux layer without any visible arc, spatter, smoke or flash. Here the weld arc is

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Shielded Metal Arc Welding Process | Shielded Metal Arc Welding Applications | Shielded Metal Arc Welding Coating

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Shielded Metal Arc Welding: (SMAW) It is also known as Manual metal arc welding; stick welding or electric arc welding. It is a fusion welding process. Welding is performed with the heat of an electric arc that is maintained between the ends of a coated metal electrode and the work piece. The electric energy from the arc thus formed produces

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Mechanical Aptitude Test | Jobs For Mechanical Engineers

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1. Why are Head Gaskets blown? Normally head gasket blows, when the engine overheats and they can also blow from incorrect installation or poor design. Head gaskets expand and contract according to engine temperature, these cycles may happen after a long period of time, causes the gasket to fail. If you’re replacing the gasket, check the engine block, and head

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Latest Mechanical Engineering Interview Questions | Placement Interview Questions

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1. What is the difference between Pipe and Tube? Ex. Iron Pipe, Carbon Tube, Steel Tube etc. · Tube is defined by Outer diameter and Wall thickness (OD and WT). While Pipe is defined by Inner diameter (ID). Example: 2 inch pipe have 2.375 inch outer diameter, where 2 inch tube have same 2 inch outer diameter. · Tube is

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Free 3D CAD Models | AutoCAD Exercise Drawings | AutoCAD 2012 Exercises

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Introduction to AUTOCAD: AutoCAD, created by Autodesk, is the most widely used technical drawing program wherewith over 1.25 million registered users. Autodesk is the fourth largest PC software company in the world. According to the Autodesk, and for Computer Aided Design (CAD), but can also stand for Computer Aided Drafting or Drawing. The first version of AutoCAD came out in

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