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In spot welding, the parts to be joined are normally over lapped. The work piece are clamped between two water cooled copper electrodes. On the passage of a high transient current, the interface melts over a spot and form the weld. The cooling at the electrode limits the size of the spot. A very high current is needed for a very short duration to complete the welding. The interfaces to be joined are initially cleaned by various methods, including scratch brushing and vapour decreasing. A spot weld normally contains some porosity at the weld centre, which unless excessive is harmless.
The spot welding process is difficult to use for highly conductive materials such as aluminum and magnesium.
Logic Gates: The term logic in electronics refers to the representation and logical manipulation of numbers usually in a code employing two symbols. i.e., bits. An electron
Expertsmind.com brings you unique solution in Electrical Engineering How does OR gate work? An 'OR' gate is like two or more switches positioned in parallel.
Communications System • Information Source - Information may take many forms: data, image, voice, video • Transmittter - Processes information into a form suitable for
Factors affecting accuracy 1. The transducer must be located in an appropriate place and with an appropriate orientation to measure the measurand accurately. 2. The introduc
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The demand placed on a system is described by a lognormally distributed random variable with mean 50 and standard deviation of 10. The capacity of the system is modeled by a Weibul
Acoustic linings in Aircraft engine: One method of suppressing the noise from the fan stage of a high by-pass ratio engine is to incorporate a noise absorbent liner around the
i have a project to do a remote control car by wired and the car should go foreword and backward by increasing the speed from the joystick(1) and the sound joystick control the dir
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