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Which of the following defect occurs because of the bending of rolls?(a) Zipper cracks(b) Folds(c) Laminations(d) Alligatoring |
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Answer» The correct answer is (a) Zipper cracks For explanation: Wavy edges and zipper cracks can occur as defects in the material, if the rolls are bended, but not, folds or laminations or alligatoring. Their causes of occurrence are different. |
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