Refractory Technology Silliminite (Al2O₃.SiO₂) refractory, which is a neutral refractory, is not used in Pottery furnace Gas retorts Glass melting furnace Crucibles Pottery furnace Gas retorts Glass melting furnace Crucibles ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Pyrometric cone equivalent (PCE) of a refractory is the measure of its Fusion point Spalling resistance Resistance to slag penetration Resistance to carbon monoxide attack Fusion point Spalling resistance Resistance to slag penetration Resistance to carbon monoxide attack ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Maximum water percentage in refractory mix meant for hand moulding may be as high as __________ percent. 5-7 7-12 2-3 14-20 5-7 7-12 2-3 14-20 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Semi-silica bricks compared to silica bricks have Both A & B Better spalling resistance Less fusion point Neither A nor B Both A & B Better spalling resistance Less fusion point Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Carbon refractories Do not burn/oxidise, when exposed to air on heating Do not resist temperature fluctuations Are not attacked by slags, as they are not wetted by melts Have extremely low thermal & electrical conductivities Do not burn/oxidise, when exposed to air on heating Do not resist temperature fluctuations Are not attacked by slags, as they are not wetted by melts Have extremely low thermal & electrical conductivities ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Tar dolomite bricks are used in the Basic Bessemer converter Basic open hearth furnace Electric furnaces All of these Basic Bessemer converter Basic open hearth furnace Electric furnaces All of these ANSWER DOWNLOAD EXAMIANS APP
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