Refractory Technology Vacuum steel degassing units are lined with High alumina bricks Graphite blocks Low duty firebricks Silica bricks High alumina bricks Graphite blocks Low duty firebricks Silica bricks ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Spalling resistance of a refractory can not be increased by Using a coarser grog during its manufacture Decreasing its thermal co-efficient of expansion Making it denser Increasing its porosity Using a coarser grog during its manufacture Decreasing its thermal co-efficient of expansion Making it denser Increasing its porosity ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which of the following has the lowest electrical resistivity? Graphite Alumina Fireclay Zircon Graphite Alumina Fireclay Zircon ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Most Cermets, which normally have high thermal conductivity and high thermal shock resistance, comprises of ceramic & metallic components of __________ percent respectively. 80 and 20 20 and 80 50 and 50 60 and 40 80 and 20 20 and 80 50 and 50 60 and 40 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Insulating refractories should have High porosity Neither A nor B Low thermal conductivity Both A & B High porosity Neither A nor B Low thermal conductivity Both A & B ANSWER DOWNLOAD EXAMIANS APP
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
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