Refractory Technology __________ bricks should not be used in oxidising atmosphere. Fireclay Tar dolomite Silica Carbon Fireclay Tar dolomite Silica Carbon ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology RUL of refractories depends on the Physical structure Presence of impurities like iron & alkali All of these Chemical composition Physical structure Presence of impurities like iron & alkali All of these Chemical composition ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology What is Thoria? Thoria Has high resistance to basic slags Thoria Has high fusion temperature (> 3000°C) but poor resistance to thermal shock All of these Which is expensive & radioactive, is used in crucibles for melting high purity metals Thoria Has high resistance to basic slags Thoria Has high fusion temperature (> 3000°C) but poor resistance to thermal shock All of these Which is expensive & radioactive, is used in crucibles for melting high purity metals ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Panel test determines the __________ of refractories. Fusion point Slag penetration resistance Refractoriness under load (RUL) Spalling resistance Fusion point Slag penetration resistance Refractoriness under load (RUL) Spalling resistance ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Beryllia (which is used in making crucibles for melting uranium & thorium) is superior to alumina in all respects for high temperature (> 1900°C ) use, except Fusion point Thermal conductivity Cost Electrical conductivity Fusion point Thermal conductivity Cost Electrical conductivity 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
EXAMIANS