Why alternating current is most suitable for resistance welding
Asked by admin @ in Physics viewed by 355 People
Why alternating current is most suitable for resistance welding?
Asked by admin @ in Physics viewed by 355 People
Why alternating current is most suitable for resistance welding?
Answered by admin @
Answer:
resistance welding is a thermo electric process used for joint two metallic parts.
Electricity is used to provide heat.
Now, we know that Alternating Current is a pulsatile current having sine or cosine functions.
So in each cycle, the current crosses zero mark. This provides a time to cool down the joined parts of the metal.
But if we use direct current, we get continuous supply of heat , which doesn't allow metal to cool and solidify.
That's the reason we use alternating current. Hope you will be able to understand.
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