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Which of the following is not considered a basic parameter for arc welding?
- a)Current
- b)Voltage
- c)Pressure
- d)Welding speed
Correct answer is option 'C'. Can you explain this answer?
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Verified Answer
Which of the following is not considered a basic parameter for arc wel...
For arc welding the main parameters are as follows:
Welding current: Welding current is the most influential parameter because it affects bead shape, controls the rate at which electrode is melted and therefore also controls the deposition rate, heat affected zone, the depth of penetration, and the amount of base metal melted.
Arc voltage: Welding voltage varies with the length of the arc between the electrode and molten weld metal. With the increase in arc length, the arc voltage increases.
Welding speed: Welding speed is the linear rate at which an arc is moved along the weld joint. With any combination of welding voltage and welding current, the effect of changing the welding speed confirms to a general pattern, the weld bead becomes smaller.
Electrode size: Electrode size affects the weld bead shape and the depth of penetration at fixed current.
Electrode work angle: The electrode may be held perpendicular to the work-piece or, tilted forward or backward with respect to the weld pool. As the arc stream tends to align itself along the axis of the electrode, the weld pool shape is different in each case, and so is the shape of the weld bead.
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Which of the following is not considered a basic parameter for arc welding?a)Currentb)Voltagec)Pressured)Welding speedCorrect answer is option 'C'. Can you explain this answer?
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