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Two 1 mm thick steel sheets are to be spot welded...

This question belongs to Mechanical Engineering Manufacturing And Production Technology
Manufacturing and Production Technology
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Two 1 mm thick steel sheets are to be spot welded at a current of 5000 A. Assuming effective resistance to be 200 μm and current flow time of 0.2 second, heat generated during the process will be

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Correct Answer: Option D
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3 Comments
Dhiraj Ghorpade
Dhiraj Ghorpade 6 years ago
Formula : (I^2) R ∆t
= (5000)^2 × (200×10^-6) × 0.2
= 25×10^6. × 200×10^-6 × 0.2
= 5000×0.2
=1000J
Mechie Techie
Mechie Techie 7 years ago
H=I^2Rt
=5000^2*200x10^-6*0.2
=1000
Rahul Gamit
Rahul Gamit 7 years ago
How ??
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