Foundry crucible is made of_________________?

Related Mcqs:

White cast iron contains carbon in the form of__________________?

A. free carbon B. graphite C. cementite D. white carbon E. ferrite...

Process of austempering results in__________________?

A. formation of bainite structure B. carburised structure C. martenistic structure D. lamellar layers of carbide distributed throughout the structure E. relieving of stresses throughout a component...

The most effective inhibitor of grain growth, when added in small quantities is__________________?

A. carbon B. vanadium C. manganese D. cobalt E. copper...

Nickel in steel___________________?

A. improves wear resistance, cutting ability and toughness B. refines grain size and produces less tendency to carburisation, improves corrosion and heat resistant proper¬ties C. improves cutting ability and reduces hardenability D. gives ductility, toughness, tensile strength and anticorrosion properties E. none of the above...

Addition of lead and bismuth to aluminium results in_________________?

A. improvement of casting characteristics B. improvement of corrosion resistance C. one of the best known age and precipitation-hardening systems D. improving machinability E. none of the above...