Refractory Technology Insulating refractories should have High porosity Both A & B Neither A nor B Low thermal conductivity High porosity Both A & B Neither A nor B Low thermal conductivity ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Maximum water percentage in refractory mix meant for hand moulding may be as high as __________ percent. 5-7 2-3 14-20 7-12 5-7 2-3 14-20 7-12 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Maximum alumina content in high alumina refractory can be as high as __________ percent. 70 30 90 50 70 30 90 50 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Maximum apparent porosity of magnesite bricks is about __________ percent. 24 44 8 58 24 44 8 58 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Porosity of silica bricks varies from __________ percent. 45 to 60 5 to 10 60 to 75 20 to 30 45 to 60 5 to 10 60 to 75 20 to 30 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Furnace atmosphere for softening temperature determination of refractories (in which segar cones are placed) should be Either A or B Oxidising Neutral Neither A nor B Either A or B Oxidising Neutral Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
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