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Welding transformer
The resistance welding transformers step down the line tune of 2 to 20 V. The primary is connected to the line supply and is made from edge bent copper strip insulated between turns with the entire coil also thoroughly insulated. In a typical resistance welding transformer, there are 2 coils of each 8 steps in the primary winding. The two coils can be connected either in series or parallel thus giving rise to 16 different secondary voltages. The secondary winding will have provision for water cooling.
Axi s of symmetry If in diagram half part of diagram is mirror image of next ½ part, then there is a symmetry in diagram. The axis at which symmetry is create, called as axis
A uniform air stream with velocity U = 10m/s flows over a flat plate of length 10 meters in the first meter the boundary layer is laminar but beyond this point boundary layer is fu
Choose a wire rope for a vertical mine hoist to lift a load of 55 KN from a depth 300 meters. A rope speed of 500 meter/min is to be attained in 10 seconds. A multi -disk clutch
Repair of surface defects in welds by chipping, grinding and gouging is permitted provided the thickness is not reduced below the minimum required. Removal of defects shall be ver
The Bronzes The coinage bronze employed for making coins in earlier days contains 95% copper, 4% Sn and 1 % Zn. The Zn acts as a deoxidizer. Such alloy is soft and ductile.
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TUNGSTEN INERT GAS WELDING (TIG) In this process, an arc is struck between a non consumable tungsten electrode and the base metal. The tungsten electrode is called non consumab
Q. Effect on the corrosion rate of carbon steel? The velocity of the acid has a significant effect on the corrosion rate of carbon steel. The recommended velocity range for pi
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