Refractory Technology Refractories subjected to alternate cycles of heating & cooling are liable to loose their resistance to CO attack Thermal spalling Fusion under load Slag attack CO attack Thermal spalling Fusion under load Slag attack ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractoriness under load (RUL) of fireclay bricks (under a load of 2 kg/cm² ) is __________ °C. >1350 1000 >2000 500 >1350 1000 >2000 500 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Tar dolomite bricks are used in the All of these Basic open hearth furnace Electric furnaces Basic Bessemer converter All of these Basic open hearth furnace Electric furnaces Basic Bessemer converter ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractoriness/fusion points of 'superduty' refractories is __________ °C. 1630-1670 > 2000 1520-1630 > 1730 1630-1670 > 2000 1520-1630 > 1730 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Cermets are Used in space vehicles, missiles & nuclear energy plants All of these Composite material containing both ceramic & metallic constituents Having high strength & resistance to high temperature Used in space vehicles, missiles & nuclear energy plants All of these Composite material containing both ceramic & metallic constituents Having high strength & resistance to high temperature ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Highest melting (m.p = 3070°C) oxide refractory is Thoria Zirconia Alumina Magnesia Thoria Zirconia Alumina Magnesia ANSWER DOWNLOAD EXAMIANS APP
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