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Assume that the two 2 mm thick steel sheets are being sport welded at a current of 5500 A and current - flow time t = 0.15s. Using electrodes 6 mm in diameter, estimate the amount of heat generated in resistance spot welding. (Take RC = 250 μΩ)
  • a)
    1032 J
  • b)
    1120 J
  • c)
    995 J
  • d)
    1134 J
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Assume that the two 2 mm thick steel sheets are being sport welded at ...
Heat generated H = I2 Rt
Where I is the current supply
R is the resistance
t is the time for which the current is supplied
H = (5500)2 × 250 × 10-6 × 0.15
= 1134 J
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Most Upvoted Answer
Assume that the two 2 mm thick steel sheets are being sport welded at ...
Given data:
- Thickness of each steel sheet (t): 2 mm
- Current (I): 5500 A
- Time (t): 0.15 s
- Diameter of electrodes (d): 6 mm
- Resistance of contact (RC): 250 μΩ

Calculating the heat generated:
1. Calculate the resistance of each spot weld:
- Resistance (R) = RC * t
- R = 250 μΩ * 0.15 s = 37.5 μΩ
2. Calculate the heat generated at each spot weld:
- Heat (Q) = I^2 * R * t
- Q = (5500 A)^2 * 37.5 μΩ * 0.15 s
- Q = 1134 J

Therefore, the amount of heat generated in resistance spot welding is 1134 J.
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Assume that the two 2 mm thick steel sheets are being sport welded at a current of 5500 A and current - flow time t = 0.15s. Using electrodes 6 mm in diameter, estimate the amount of heat generated in resistance spot welding. (Take RC= 250 μΩ)a)1032 Jb)1120 Jc)995 Jd)1134 JCorrect answer is option 'D'. Can you explain this answer?
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