Refractory Technology Colour of fireclay bricks is Black Yellow Light buff to reddish buff None of these Black Yellow Light buff to reddish buff None of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fireclay refractories have Very high cost Low co-efficient of thermal expansion Poor thermal spalling resistance Tendency to expand unduly high during firing Very high cost Low co-efficient of thermal expansion Poor thermal spalling resistance Tendency to expand unduly high during firing ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Upper portion of hot metal mixer are lined with mullite bricks, which helps in resisting the Washing action of metal Corrosion by layer of slag Neither A nor B Both A & B Washing action of metal Corrosion by layer of slag Neither A nor B Both A & B ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology In panel test for spalling resistance, the average face temperature of panel assembly is maintained at __________ °C for 24 hours. 700 2000 1600 1000 700 2000 1600 1000 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is required in an insulating refractory? High thermal conductivity Neither A nor B Low porosity Both A & B High thermal conductivity Neither A nor B Low porosity Both A & B ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology High thermal conductivity of a refractory material is not important, when it is to be used in the Coke oven regenarators Blast furnace Recuperators Muffle furnace Coke oven regenarators Blast furnace Recuperators Muffle furnace ANSWER DOWNLOAD EXAMIANS APP
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