Refractory Technology Cold crushing strength of ordinary fireclay brick is about 950 kg/cm² . On exposure to a temperature of about 1500°C, its crushing strength may come down to as low as __________ kg/cm² . 250 65 150 450 250 65 150 450 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology __________ is the measure of the strength of refractory under the combined effect of temperature & load. Specific gravity RUL Porosity Thermal conductivity Specific gravity RUL Porosity Thermal conductivity ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Pure oxide refractories are generally monocrystaliine in nature and are self bonded __________ bricks are generally used as moderator in nuclear reactors. Thoria Beryllia Corundum Carborundum Thoria Beryllia Corundum Carborundum ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is the stable form of silica between 1470°C and the melting point 1713°C ? Tridymite Cristobalite None of these Quartz Tridymite Cristobalite None of these Quartz ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Hot blast main (carrying air at 1000°C) in blast furnace are lined with __________ bricks. Magnesite Fireclay Zirconia Silica Magnesite Fireclay Zirconia Silica ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Silica bricks are never used for lining the Dome of blast furnace stoves Roof of open hearth furnace By-product coke ovens Beehive coke ovens Dome of blast furnace stoves Roof of open hearth furnace By-product coke ovens Beehive coke ovens ANSWER DOWNLOAD EXAMIANS APP
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