Refractory Technology High porosity refractory bricks have Poor heat conductivity & low strength Better thermal spalling resistance Poor resistance to the peneration of molten slag, metal & flue gases All of these Poor heat conductivity & low strength Better thermal spalling resistance Poor resistance to the peneration of molten slag, metal & flue gases All of these 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. 2000 1600 700 1000 2000 1600 700 1000 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Spalling of silica bricks occurs due to abrupt volume changes, when it is cooled below a temperature of __________ °C. 270 570 70 770 270 570 70 770 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Cermets are Having high strength & resistance to high temperature Used in space vehicles, missiles & nuclear energy plants Composite material containing both ceramic & metallic constituents All of these Having high strength & resistance to high temperature Used in space vehicles, missiles & nuclear energy plants Composite material containing both ceramic & metallic constituents All of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractory bricks having lower porosity have Low thermal conductivity Low heat capacity High insulating properties Greater strength Low thermal conductivity Low heat capacity High insulating properties Greater strength ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Firing temperature of magnesite bricks is about __________ °C. 1000-1200 1600-1800 2400-2600 800-1000 1000-1200 1600-1800 2400-2600 800-1000 ANSWER DOWNLOAD EXAMIANS APP
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