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EQUIPMENT FOR RESISTANCE WELDING
The equipment for resistance welding is different from that for arc welding for the following reasons: Resistance welding machines are complicated and very costly. Automation and controls are more in these. Many resistance welding equipments are custom - built. The machines can be operated with single phase or three phase mains. The equipment may be direct energy or stored energy machines. All the resistance welding machines require a low voltage, high current output (current in the order of thousand to lakhs of amperes). Four main constituents are:1. Electrical Power source2. Mechanical system3. Control equipment4. Feeding system
A 2 Kg mass is suspended in a box by a spring as shown in figure. The box is put on a platform having vibration y = 0.8 sin 6t cm. calculate absolute amplitude of mass
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At a sudden enlargement of a water main from 240 mm to 480 mm diameter, the hydraulic gradient rises by 10 mm. Estimate the rate of flow.
STORAGE AND HANDLING OF ELECTRODES It is recommended that the electrodes should be stored in a warm and dry place. Generally, conditions of storage in the shop are not very condu
Manual Engineering Drawing: The physical object is to be drawn (Do not take photographs of the object or use it as a template that you trace with) in class as an isometric dra
F AC T OR S AFFECTING THE SELECTION OF BOILER: - Working Pressure and amount of steam needed. - Floor area required. - Operating and Maintenance Required
a) What is Interference and show the relation for the minimum number of teeth required for a wheel. b) Show the relations for Maximum length of path of contact and Maximum lengt
Iron Powder Electrodes Iron powder is a widely used covering ingredient. It is incorporated in certain coverings to the extent of one half of the total weight. Iron Powder impart
Bending moment
Isothermal Transformation: Austenite is not normally converted in martensite instantly but the procedure continues for some time. Various steels take various time for full tr
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