Refractory Technology Crushing strength of a refractory Decreases with rise in service temperature Is unaffected with change in service temperature Decreases with increase in porosity Increases with rise in service temperature Decreases with rise in service temperature Is unaffected with change in service temperature Decreases with increase in porosity Increases with rise in service temperature ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Alumina-graphite bricks are used for lining the Slide gate in teeming laddies Continuous casting systems Neither A nor B Both A & B Slide gate in teeming laddies Continuous casting systems Neither A nor B Both A & B ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which of the following has the lowest electrical resistivity? Zircon Graphite Fireclay Alumina Zircon Graphite Fireclay Alumina ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology An indication of degree of firing in silica brick is its None of these RUL Specific gravity Fusion point None of these RUL Specific gravity Fusion point ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Cold crushing strength of fireclay bricks is about __________ kgf/cm². 50-100 500-1000 200-400 100-150 50-100 500-1000 200-400 100-150 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Silica refractories All of these Crack when subjected to sudden change of temperature Have lower thermal conductivity than fireclay bricks Can not be used in the dome of hot blast stoves All of these Crack when subjected to sudden change of temperature Have lower thermal conductivity than fireclay bricks Can not be used in the dome of hot blast stoves ANSWER DOWNLOAD EXAMIANS APP
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