Refractory Technology Electrical resistor bars are made of Silicon carbide Zirconia Alumina Graphite Silicon carbide Zirconia Alumina Graphite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which one contains maximum percentage of Al2O₃ ? Aluminous firebrick Firebrick Magnesite Sillimanite Aluminous firebrick Firebrick Magnesite Sillimanite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which of the following does not occur during firing/burning of refractories? Development of stable mineral form Vitrification Decrease in crushing strength Removal of water of hydration Development of stable mineral form Vitrification Decrease in crushing strength Removal of water of hydration ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which of the following impurities reduces the refractoriness of magnesite bricks? CaO SiO₂ Al2O₃ All of these CaO SiO₂ Al2O₃ All of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which of the following bricks should not be used, if the furnace is to be used intermit-tantly? Silicon carbide bricks Firebricks Sillimanite Silica bricks Silicon carbide bricks Firebricks Sillimanite Silica bricks ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Pyrometric cone equivalent (PCE) of a refractory is the measure of its Fusion point Resistance to slag penetration Spalling resistance Resistance to carbon monoxide attack Fusion point Resistance to slag penetration Spalling resistance Resistance to carbon monoxide attack ANSWER DOWNLOAD EXAMIANS APP
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