Question:-
Scrab is a
Option (A)
sand casting defect
Option (B)
maching defect
Option(C)
welding defect
Option(D)
forging defect
Correct Option:
(A)
Question Solution:
Scab refers to the rough, thin layer of a metal, protruding above the casting surface, on top of thin layer of sand the layer is held on to the casting by a metal stringer through the sand
question-answer-faq-8434