Refractory Technology Spalling tendency of refractories is reduced by increasing its Thermal conductivity Porosity Specific gravity Strength Thermal conductivity Porosity Specific gravity Strength ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Crushing strength of a refractory Decreases with increase in porosity Increases with rise in service temperature Is unaffected with change in service temperature Decreases with rise in service temperature Decreases with increase in porosity Increases with rise in service temperature Is unaffected with change in service temperature Decreases with rise in service temperature ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fusion point of a basic refractory material is Not affected by the addition of acid oxides Increased by the addition of acid oxides Always less than 1000°C Reduced by the addition of acid oxides Not affected by the addition of acid oxides Increased by the addition of acid oxides Always less than 1000°C Reduced by the addition of acid oxides 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 Silicon carbide bricks Silica bricks Firebricks Sillimanite Silicon carbide bricks Silica bricks Firebricks ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology With increase in the alumina content, the refractoriness of high alumina refractories Remains same Decreases May increase or decrease Increases Remains same Decreases May increase or decrease Increases ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology __________ bricks should not be used in oxidising atmosphere. Fireclay Carbon Silica Tar dolomite Fireclay Carbon Silica Tar dolomite ANSWER DOWNLOAD EXAMIANS APP
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