Refractory Technology Maximum water percentage in refractory mix meant for hand moulding may be as high as __________ percent. 5-7 14-20 7-12 2-3 5-7 14-20 7-12 2-3 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Upper portion of hot metal mixer are lined with mullite bricks, which helps in resisting the Washing action of metal Corrosion by layer of slag Both A & B Neither A nor B Washing action of metal Corrosion by layer of slag Both A & B Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Thermal spalling mainly occurs during __________ of furnaces. Both A & B Cooling down Warming up Neither A nor B Both A & B Cooling down Warming up Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Carbon bricks are not used in the lining of the Electric furnaces Blast furnace hearth Highly chemical resistant equipments Combustion chamber of blast furnace stoves Electric furnaces Blast furnace hearth Highly chemical resistant equipments Combustion chamber of blast furnace stoves ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Rate of slag attack on refractories increases with rise in temperature due to the None of these Increased thermal conductivity of brick Decreased viscosity of slag Oxidising condition in the furnace None of these Increased thermal conductivity of brick Decreased viscosity of slag Oxidising condition in the furnace ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Furnace atmosphere for softening temperature determination of refractories (in which segar cones are placed) should be Oxidising Neither A nor B Neutral Either A or B Oxidising Neither A nor B Neutral Either A or B ANSWER DOWNLOAD EXAMIANS APP
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