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Mechanical Engineering Mcqs
Q
Ductile cast iron___________________?
AA. Contains 1.7 to 3.5% carbon in free state and is obtained by the slow cooling of molten cast iron
BB. Is also known as chilled cast iron and is obtained by cooling rapidly. it is almost unmachinable
CC. Is produced by annealing process. it is soft, tough and easily machined metal
DD. Is produced by small additions of magnesium (or creium) in the ladle. graphite is in nodular or spheroidal form and is well dispersed throughout the material
Correct Answer:
D. D. Is produced by small additions of magnesium (or creium) in the ladle. graphite is in nodular or spheroidal form and is well dispersed throughout the material
