WELDABILITY OF STEEL - Practice Mode

1) Which test indicates the hardness of a metal?
Correct Answer: Brinell test
2) What type of preheating is done only at the portions to be welded?
Correct Answer: Local preheating
3) Which type of polarity is used in welding non ferrous metals?
Correct Answer: Reverse polarity
4) Which type of arc does not have control on the molten pool?
Correct Answer: Long arc length
5) Which of the following produces unstable arc?
Correct Answer: Long arc length
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