Localised shrinkage porosity is seen when there________________?

Related Mcqs:

The function of a sprue is to_______________?

A. Form an opening of molten metal to enter the mold B. Help polish cast restorations C. Eliminate air bubbles on the wax pattern D. Reproduce fine detail...

Which of the following refractory is used to counteract most of the expansion________________?

A. Quartz B. Cristobalite C. Tridymite D. Corundum...

Which one of the following elements is NOT added is small amount to be used as grain refiners ?

A. Iridium B. Ruthinium C. Indium D. Platinum...

Which of the following decrease with strain hardening______________?

A. Surface hardness B. Strength C. Proportion limit D. Corrosion resistance...

The strength of a gypsum investment is dependent on_______________?

A. Carbon content B. Silica content C. Gypsum D. Copper...