Refractory Technology Insulating refractories should have Neither A nor B High porosity Low thermal conductivity Both A & B Neither A nor B High porosity Low thermal conductivity Both A & B ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractoriness of a typical silica brick corresponds to Segar cone number, '32', which is equivalent to a temperature of __________ °C. 1710 1915 1380 1520 1710 1915 1380 1520 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Maximum water percentage in refractory mix meant for hand moulding may be as high as __________ percent. 7-12 5-7 2-3 14-20 7-12 5-7 2-3 14-20 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology 'Super refractories' are made from pure Nitrides Carbides Oxides Borides Nitrides Carbides Oxides Borides ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is required in an insulating refractory? Low porosity Both A & B High thermal conductivity Neither A nor B Low porosity Both A & B High thermal conductivity Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which of the following bricks has the most close values of RUL and PCE? High alumina bricks Fireclay bricks Tar dolomite bricks Silica bricks High alumina bricks Fireclay bricks Tar dolomite bricks Silica bricks ANSWER DOWNLOAD EXAMIANS APP
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