Refractory Technology Refractoriness/fusion points of 'superduty' refractories is __________ °C. 1630-1670 1520-1630 > 2000 > 1730 1630-1670 1520-1630 > 2000 > 1730 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fusion point of a basic refractory material is Not affected by the addition of acid oxides Always less than 1000°C Reduced by the addition of acid oxides Increased by the addition of acid oxides Not affected by the addition of acid oxides Always less than 1000°C Reduced by the addition of acid oxides Increased by the addition of acid oxides ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Maximum water percentage in refractory mix meant for hand moulding may be as high as __________ percent. 14-20 5-7 7-12 2-3 14-20 5-7 7-12 2-3 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Capacity of a refractory brick to withstand-sudden changes in temperature is denoted by the property called Refractoriness under load (RUL) Spalling resistance Refractoriness None of these Refractoriness under load (RUL) Spalling resistance Refractoriness None of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Spalling of a refractory means its Fracture due to uneven expansion at high temperature Softening Resistance to chemical action of gases and molten fluxes Resistancce to compressive loads Fracture due to uneven expansion at high temperature Softening Resistance to chemical action of gases and molten fluxes Resistancce to compressive loads ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is not a high alumina refractory? Mullite Bauxite Corrundum Dolomite Mullite Bauxite Corrundum Dolomite ANSWER DOWNLOAD EXAMIANS APP
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