Refractory Technology High refractorinness of refractory bricks means, that it has a High resistance to fusion High spalling resistance Low porosity Low spalling resistance High resistance to fusion High spalling resistance Low porosity Low spalling resistance ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Thermal diffusivity of a refractory brick is high, when its __________ is high. Thermal conductivity Specific heat Density None of these Thermal conductivity Specific heat Density None of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology PCE value (Segar cone) of superduty refractories is more than 33, which is equivalent to a temperature of __________ °C. 1730 1670 1520 1630 1730 1670 1520 1630 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology High porosity refractory bricks have Poor resistance to the peneration of molten slag, metal & flue gases Poor heat conductivity & low strength All of these Better thermal spalling resistance Poor resistance to the peneration of molten slag, metal & flue gases Poor heat conductivity & low strength All of these Better thermal spalling resistance ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Maximum shrinkage in volume occurring during burning/firing of dried refractories may be as high as __________ percent. 10 15 30 20 10 15 30 20 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is not an alumino-silicate refractory? Fireclay bricks Mullite bricks Tar dolomite bricks High alumina bricks Fireclay bricks Mullite bricks Tar dolomite bricks High alumina bricks ANSWER DOWNLOAD EXAMIANS APP
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