Refractory Technology Ferromagnetic ceramic material is not used in the Transformers Television sets Magnetic switches Thermal insulation Transformers Television sets Magnetic switches Thermal insulation ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology RUL of refractories depends on the Presence of impurities like iron & alkali All of these Chemical composition Physical structure Presence of impurities like iron & alkali All of these Chemical composition Physical structure ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology What is Thoria? Thoria Has high fusion temperature (> 3000°C) but poor resistance to thermal shock Which is expensive & radioactive, is used in crucibles for melting high purity metals Thoria Has high resistance to basic slags All of these Thoria Has high fusion temperature (> 3000°C) but poor resistance to thermal shock Which is expensive & radioactive, is used in crucibles for melting high purity metals Thoria Has high resistance to basic slags All of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Upper portion of hot metal mixer are lined with mullite bricks, which helps in resisting the Neither A nor B Corrosion by layer of slag Washing action of metal Both A & B Neither A nor B Corrosion by layer of slag Washing action of metal Both A & B ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Segar cones are used for the determination of __________ of refractories. Spalling resistance Resistance to slag attack Electrical conductivity Softening temperature Spalling resistance Resistance to slag attack Electrical conductivity Softening temperature ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which of the following bricks has the most close values of RUL and PCE? Tar dolomite bricks High alumina bricks Fireclay bricks Silica bricks Tar dolomite bricks High alumina bricks Fireclay bricks Silica bricks ANSWER DOWNLOAD EXAMIANS APP
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