Refractory Technology Porosity of silica bricks varies from __________ percent. 5 to 10 60 to 75 20 to 30 45 to 60 5 to 10 60 to 75 20 to 30 45 to 60 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 Carborundum Beryllia Corundum Thoria Carborundum Beryllia Corundum ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Magnesite refractories are generally not used in the Open hearth furnace Burning zone of cement kilns Electric furnace walls Steel melting furnace Open hearth furnace Burning zone of cement kilns Electric furnace walls Steel melting furnace ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Cold crushing strength of fireclay bricks is about __________ kgf/cm². 50-100 200-400 100-150 500-1000 50-100 200-400 100-150 500-1000 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Spalling of a refractory means its Softening Fracture due to uneven expansion at high temperature Resistance to chemical action of gases and molten fluxes Resistancce to compressive loads Softening Fracture due to uneven expansion at high temperature Resistance to chemical action of gases and molten fluxes Resistancce to compressive loads ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology With increasing alumina content, the fusion point of high alumina refractories Remains constant May increase or decrease ; depends on its alumina content Decreases Increases Remains constant May increase or decrease ; depends on its alumina content Decreases Increases ANSWER DOWNLOAD EXAMIANS APP
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