Refractory Technology PCE value (Segar cone) of superduty refractories is more than 33, which is equivalent to a temperature of __________ °C. 1730 1520 1670 1630 1730 1520 1670 1630 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractoriness under loads (RUL) is quite close to the fusion temperature (PCE) for __________ bricks. Silica Dolomite Very low alumina Fireclay Silica Dolomite Very low alumina Fireclay ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Carbon refractories Are not attacked by slags, as they are not wetted by melts Do not burn/oxidise, when exposed to air on heating Have extremely low thermal & electrical conductivities Do not resist temperature fluctuations Are not attacked by slags, as they are not wetted by melts Do not burn/oxidise, when exposed to air on heating Have extremely low thermal & electrical conductivities Do not resist temperature fluctuations ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is the most stable crystalline form of silica at room temperature? Cristobalite Tridymite Quartz None of these Cristobalite Tridymite Quartz None 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 1000 1600 700 2000 1000 1600 700 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which of the following bricks should not be used, if the furnace is to be used intermit-tantly? Sillimanite Silica bricks Silicon carbide bricks Firebricks Sillimanite Silica bricks Silicon carbide bricks Firebricks ANSWER DOWNLOAD EXAMIANS APP
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