Warped castings may be produced due to Foundry Technology Mcqs December 1, 2019 BILAL KHATTAK0 A.poor collapsibility of cores B.non-provision of camber allowance on the pattern C.weak flasks D.any of the aboveRelated Mcqs:When small castings are to be produced in large numbers, the type of pattern generally used isIn small castings which of the following allowance can be ignored?In case of cored aluminium castings, the contraction allowance isDistortion in castings can be reduced byIn centrifugal castings, the cores are generally made ofSwell is a defect in castings due toShot blasting is the process for the cleaning ofA drawback is employed whenA pattern maker’s contraction rule accounts forGenerally the pattern used in manufacturing cast iron pipes are