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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.
Electron gun: The electron gun consists of the following: 1. Cathode: An indirectly heated cathode (negatively biased w.r.t. the screen). 2. Grid: A cylindric
The self lubricating bearing is a typical application of metal powder parts or powder metallurgy process. The self lubricating bearings made from brass, iron, aluminium bronze etc,
process / description.. if I put A=1000 and B=0100 A>B gate will show output 1 and dose A
why we use h for bjt
Blanking involves cutting of the sheet metal along a closed outline in a single step to separate the piece from the surrounding stock. As shown in figure, the path that is cut out
If all states are measured by appropriate sensors and interfaced to the flight control computer then allthe states may be fed back and there is no restriction on the choice of K. S
I paid for and attached module 16 for answers this morning but received answers for module 15. How can I get the correct set of answers for module 16 please
all the types of inductor which are known?????
Liquidity Ratios: The liquidity ratios of the company help in determining the ability of the company to convert its current or liquid assets readily into cash. Higher the ratios be
Briefly explain how to analyze an organization''s competition Answer: In order to analyze an organization’s competition, the following aspects need to be checked and recorded in o
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