Refractory Technology __________ bricks should not be used in oxidising atmosphere. Carbon Silica Fireclay Tar dolomite Carbon Silica Fireclay Tar dolomite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Electrical resistor bars are made of Zirconia Alumina Graphite Silicon carbide Zirconia Alumina Graphite Silicon carbide ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractories subjected to alternate cycles of heating & cooling are liable to loose their resistance to Fusion under load Slag attack CO attack Thermal spalling Fusion under load Slag attack CO attack Thermal spalling ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fusion temperature of pure silica (SiO₂) is __________ °C. 2800 1350 2570 1715 2800 1350 2570 1715 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Furnace atmosphere for softening temperature determination of refractories (in which segar cones are placed) should be Oxidising Neither A nor B Either A or B Neutral Oxidising Neither A nor B Either A or B Neutral 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