Refractory Technology Except __________ , all other refractories are bad conductors of electricity (i.e, have low electrical conductivity). Graphite Chromite Fireclay Carborundum Graphite Chromite Fireclay Carborundum ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Slide gates in teeming laddie used for steel pouring in ingot moulds is lined with __________ bricks. Fireclay Bakelite impregnated or fused periclase Silica Semi-silica Fireclay Bakelite impregnated or fused periclase Silica Semi-silica ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fusion point of a basic refractory material is Increased by the addition of acid oxides Not affected by the addition of acid oxides Always less than 1000°C Reduced by the addition of acid oxides Increased by the addition of acid oxides Not affected by the addition of acid oxides Always less than 1000°C Reduced by the addition of acid oxides ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which of the following does not occur during firing/burning of refractories? Vitrification Development of stable mineral form Removal of water of hydration Decrease in crushing strength Vitrification Development of stable mineral form Removal of water of hydration Decrease in crushing strength ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Roof of a basic electric furnace is made of __________ bricks. Chromite Superduty fireclay None of these Silica Chromite Superduty fireclay None of these Silica ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fireclay bricks is not used for lining the Bottom of hot metal mixer Cupola Roof of open hearth furnace Gas producer Bottom of hot metal mixer Cupola Roof of open hearth furnace Gas producer ANSWER DOWNLOAD EXAMIANS APP
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