Refractory Technology High refractorinness of refractory bricks means, that it has a High resistance to fusion High spalling resistance Low spalling resistance Low porosity High resistance to fusion High spalling resistance Low spalling resistance Low porosity ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Addition of zircon to silica refractory brick improves its Resistance to slag attack Neither A nor B Neither A nor B Crushing strength Resistance to slag attack Neither A nor B Neither A nor B Crushing strength ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fireclay refractories have Poor thermal spalling resistance Low co-efficient of thermal expansion Very high cost Tendency to expand unduly high during firing Poor thermal spalling resistance Low co-efficient of thermal expansion Very high cost Tendency to expand unduly high during firing ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology The highest melting pure oxide (m.p. > 3000°C) is Alumina Beryllia Zirconia Thoria Alumina Beryllia Zirconia Thoria ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Porosity of fireclay refractories is __________ percent. 43961 35-50 25-35 44129 43961 35-50 25-35 44129 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Cermets are combination of ceramic and metallic materials due to which they have high strength & resistance to high temperature. Cermets are used in the Insulation of high temperature furnaces Hearth of the blast furnace Nuclear reactors, missiles & space crafts Roof of electric furnaces Insulation of high temperature furnaces Hearth of the blast furnace Nuclear reactors, missiles & space crafts Roof of electric furnaces ANSWER DOWNLOAD EXAMIANS APP
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