Refractory Technology Magnesite bricks have poor resistance to attack by __________ slag. Acid Lime None of these Basic Acid Lime None of these Basic ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is the stable form of silica upto 1470°C ? None of these Quartz Tridymite Cristobalite None of these Quartz Tridymite Cristobalite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Zirconia refractory Has poor electrical conductivity at high temperature Does not react with basic slags Can not be used as an insulator Is produced from baddeleyite Has poor electrical conductivity at high temperature Does not react with basic slags Can not be used as an insulator Is produced from baddeleyite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Porosity of silica bricks varies from __________ percent. 20 to 30 60 to 75 45 to 60 5 to 10 20 to 30 60 to 75 45 to 60 5 to 10 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Ferromagnetic ceramic material is not used in the Transformers Magnetic switches Thermal insulation Television sets Transformers Magnetic switches Thermal insulation Television sets ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Thermal spalling mainly occurs during __________ of furnaces. Cooling down Both A & B Neither A nor B Warming up Cooling down Both A & B Neither A nor B Warming up ANSWER DOWNLOAD EXAMIANS APP