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 Which of the following consumes the maximum tonnage of refractories annually in an integrated steel plant? Ceheating furnace Rotary lime kiln Soaking pits L.D. converter Ceheating furnace Rotary lime kiln Soaking pits L.D. converter ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractoriness/fusion points of 'superduty' refractories is __________ °C. 1520-1630 > 1730 1630-1670 > 2000 1520-1630 > 1730 1630-1670 > 2000 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Silica bricks have low spalling resistance below 600°C, due to its Low refractoriness Very high thermal conductivity High thermal diffusivity High co-efficient of expansion upto this temperature Low refractoriness Very high thermal conductivity High thermal diffusivity High co-efficient of expansion upto this temperature ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Maximum alumina content in high alumina refractory can be as high as __________ percent. 30 90 70 50 30 90 70 50 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology To resist spalling tendency, a refractory should have All of these Greater diffusivity Low thermal co-efficient of expansion Low specific heat All of these Greater diffusivity Low thermal co-efficient of expansion Low specific heat ANSWER DOWNLOAD EXAMIANS APP
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