Refractory Technology Pure oxide refractories are generally monocrystaliine in nature and are self bonded __________ bricks are generally used as moderator in nuclear reactors. Beryllia Thoria Corundum Carborundum Beryllia Thoria Corundum Carborundum ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fireclay refractories All of these Are not resistant to the action of basic slags Combine with salts (e.g. chlorides sulphates etc.) & bases (e.g. lime, magnesia etc.) forming fusible aluminates silicates etc Shrink during firing All of these Are not resistant to the action of basic slags Combine with salts (e.g. chlorides sulphates etc.) & bases (e.g. lime, magnesia etc.) forming fusible aluminates silicates etc Shrink during firing ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Maximum apparent porosity of magnesite bricks is about __________ percent. 8 24 44 58 8 24 44 58 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology High porosity refractory bricks have Poor heat conductivity & low strength Poor resistance to the peneration of molten slag, metal & flue gases Better thermal spalling resistance All of these Poor heat conductivity & low strength Poor resistance to the peneration of molten slag, metal & flue gases Better thermal spalling resistance All of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Capacity of a refractory brick to withstand-sudden changes in temperature is denoted by the property called Spalling resistance None of these Refractoriness under load (RUL) Refractoriness Spalling resistance None of these Refractoriness under load (RUL) Refractoriness ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is not an alumino-silicate refractory? High alumina bricks Fireclay bricks Mullite bricks Tar dolomite bricks High alumina bricks Fireclay bricks Mullite bricks Tar dolomite bricks ANSWER DOWNLOAD EXAMIANS APP
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