Refractory Technology With decrease in porosity, the __________ of the refractories decreases. Strength Thermal conductivity None of these Spalling resistance Strength Thermal conductivity None of these Spalling resistance ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Maximum shrinkage in volume occurring during burning/firing of dried refractories may be as high as __________ percent. 20 15 30 10 20 15 30 10 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. 1670 1730 1630 1520 1670 1730 1630 1520 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Pure bauxite is the best raw material for the manufacture of high alumina refractories, in which maximum alumina content can be as high as __________ percent. 55 80 90 70 55 80 90 70 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Spalling tendency of refractories is reduced by increasing its Thermal conductivity Specific gravity Porosity Strength Thermal conductivity Specific gravity Porosity Strength ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology With increase in the alumina content, the refractoriness of high alumina refractories Remains same May increase or decrease Decreases Increases Remains same May increase or decrease Decreases Increases ANSWER DOWNLOAD EXAMIANS APP
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