Refractory Technology Which of the following has the lowest electrical resistivity? Alumina Zircon Graphite Fireclay Alumina Zircon Graphite Fireclay ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Thermal spalling mainly occurs during __________ of furnaces. Cooling down Neither A nor B Warming up Both A & B Cooling down Neither A nor B Warming up Both A & B ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology __________ nozzles are used in continuous casting of steel, Zircon Beryllia Carborundum Thoria Zircon Beryllia Carborundum Thoria ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Chrome magnesite brick is not used for lining the Coke oven regenerator Burning zone of limestone rotary kilns Hearth of soaking pits Bottom hearth of reheating furnace Coke oven regenerator Burning zone of limestone rotary kilns Hearth of soaking pits Bottom hearth of reheating furnace ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which refractory must have controlled atmosphere (temperature and humidity) for its safe storage? Fireclay bricks Magnesite bricks Tar bonded dolomite bricks Mullite bricks Fireclay bricks Magnesite bricks Tar bonded dolomite bricks Mullite bricks ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Presence of MgO in alumino-silicate refractories __________ its refractoriness. Either A or B; depends on its quantity Increases Lowers Does not affect Either A or B; depends on its quantity Increases Lowers Does not affect ANSWER DOWNLOAD EXAMIANS APP
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