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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.
To achieve successful results in powder metallurgy the metallic powder must be thoroughly homogenized. The term blending and mixing are both used in this content. Blending refers t
3. Design and draw a circuit using the cascade system to operate two cylinders (A and B) which, on the operation of a start valve, produces the sequence A – B + B – A+. The cylinde
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An investment project provides cash inflows of $730 per year for eight years. What is the project payback period if the initial cost is $3,500? What if the initial cost is $5,000?
h(t) is an analog IIR filter, with the poles lambda_1 = -1, lambda_2 = -1+i, lambda_3 = -1-i and no zeros. let h[n] be a digital IIR filter with poles which defined by e^lambda_i a
Can I have the difference between the two
What Is Outsourcing? Freelancing is an ideal control style wherein company procedures are relocated to another organization. The idea is: to let a third celebration organization
I have a project in power flow analysis. The project topic is: Study of Load impact on power flow (constant power, constant impedance, constant current, induction motor) and use th
what are the components, applications, benefits and drawbacks of control engineering?????
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