Refractory Technology Which is a neutral refractory? Silica Magnesite chrome Magnesia Graphite Silica Magnesite chrome Magnesia Graphite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Thermal conductivity of refractory bricks Is independent of its porosity and is maximum for insulating bricks Decreases with decreases in porosity Increases with decrease in porosity Increases with the amount of air entrapped in pores Is independent of its porosity and is maximum for insulating bricks Decreases with decreases in porosity Increases with decrease in porosity Increases with the amount of air entrapped in pores ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Slide gates in teeming laddie used for steel pouring in ingot moulds is lined with __________ bricks. Semi-silica Silica Fireclay Bakelite impregnated or fused periclase Semi-silica Silica Fireclay Bakelite impregnated or fused periclase ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Spalling tendency of refractories is reduced by increasing its Thermal conductivity Strength Porosity Specific gravity Thermal conductivity Strength Porosity Specific gravity ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Resistance to slag attack of a refractory Decreases at higher temperature Decreases, if defective joints & cracks exist in the refractory All of these Depends on the nature of slag & refractory Decreases at higher temperature Decreases, if defective joints & cracks exist in the refractory All of these Depends on the nature of slag & refractory ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology RUL of refractories depends on the Presence of impurities like iron & alkali Chemical composition Physical structure All of these Presence of impurities like iron & alkali Chemical composition Physical structure All of these ANSWER DOWNLOAD EXAMIANS APP
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