Refractory Technology Dilatometer is used for the determination of __________ of refractories. Modulus of rupture Resistance to CO attack Permanent linear change RUL Modulus of rupture Resistance to CO attack Permanent linear change RUL ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Beryllia (which is used in making crucibles for melting uranium & thorium) is superior to alumina in all respects for high temperature (> 1900°C ) use, except Fusion point Electrical conductivity Thermal conductivity Cost Fusion point Electrical conductivity Thermal conductivity Cost ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Natural silica Transforms to other allotropic forms i.e tridymite and cristoballite involving very high volume changes All of these Is not stable at high temperature Mainly contains quartz Transforms to other allotropic forms i.e tridymite and cristoballite involving very high volume changes All of these Is not stable at high temperature Mainly contains quartz ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Cold crushing strength of ordinary fireclay brick is about 950 kg/cm² . On exposure to a temperature of about 1500°C, its crushing strength may come down to as low as __________ kg/cm² . 65 450 250 150 65 450 250 150 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology PCE value (Segar cone) of superduty refractories is more than 33, which is equivalent to a temperature of __________ °C. 1520 1670 1630 1730 1520 1670 1630 1730 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which of the following bricks has the most close values of RUL and PCE? High alumina bricks Tar dolomite bricks Fireclay bricks Silica bricks High alumina bricks Tar dolomite bricks Fireclay bricks Silica bricks ANSWER DOWNLOAD EXAMIANS APP
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