Refractory Technology Porosity of fireclay refractories is __________ percent. 35-50 44129 25-35 43961 35-50 44129 25-35 43961 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Ferromagnetic ceramic material is not used in the Magnetic switches Thermal insulation Television sets Transformers Magnetic switches Thermal insulation Television sets Transformers ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Resistance to slag attack of a refractory Decreases at higher temperature All of these Depends on the nature of slag & refractory Decreases, if defective joints & cracks exist in the refractory Decreases at higher temperature All of these Depends on the nature of slag & refractory Decreases, if defective joints & cracks exist in the refractory ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Spalling tendency of refractories is reduced by increasing its Porosity Specific gravity Thermal conductivity Strength Porosity Specific gravity Thermal conductivity Strength ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Hot face insulating linings of high purity alumina fused mullite are used, where All of these Highly reducing conditions are involved Presence of iron or silica is harmful Very high temperatures are involved All of these Highly reducing conditions are involved Presence of iron or silica is harmful Very high temperatures are involved ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which one expands on heating? Neither A nor B Fireclay bricks Silica bricks Both A & B Neither A nor B Fireclay bricks Silica bricks Both A & B ANSWER DOWNLOAD EXAMIANS APP
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