Refractory Technology Refractories used in/for __________ should have low thermal conductivity. Insulation Regenerators Muffle furnaces Coke ovens Insulation Regenerators Muffle furnaces Coke ovens ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Firing temperature of magnesite bricks is about __________ °C. 2400-2600 800-1000 1000-1200 1600-1800 2400-2600 800-1000 1000-1200 1600-1800 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which of the following bricks has the most close values of RUL and PCE? Silica bricks Tar dolomite bricks Fireclay bricks High alumina bricks Silica bricks Tar dolomite bricks Fireclay bricks High alumina bricks ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is required in an insulating refractory? Both A & B High thermal conductivity Low porosity Neither A nor B Both A & B High thermal conductivity Low porosity Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology With increase in the alumina content, the refractoriness of high alumina refractories Decreases Remains same Increases May increase or decrease Decreases Remains same Increases May increase or decrease 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 Cost Electrical conductivity Fusion point Thermal conductivity Cost Electrical conductivity Fusion point Thermal conductivity ANSWER DOWNLOAD EXAMIANS APP
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