Refractory Technology To resist spalling tendency, a refractory should have Low specific heat Greater diffusivity All of these Low thermal co-efficient of expansion Low specific heat Greater diffusivity All of these Low thermal co-efficient of expansion ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Natural silica Transforms to other allotropic forms i.e tridymite and cristoballite involving very high volume changes Is not stable at high temperature All of these Mainly contains quartz Transforms to other allotropic forms i.e tridymite and cristoballite involving very high volume changes Is not stable at high temperature All of these Mainly contains quartz ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology __________ bricks are used in the burning zone of a cement rotary kiln. Fireclay High alumina Thoria Silicon carbide Fireclay High alumina Thoria Silicon carbide ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Silicon carbide refractories are used in the Ceramic recuperators Muffle furnace All of these Zinc smelting furnace Ceramic recuperators Muffle furnace All of these Zinc smelting furnace ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is an acidic refractory? Fireclay Magnesite Dolomite Chrome magnesite Fireclay Magnesite Dolomite Chrome magnesite 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 1630 1520 1730 1670 1630 1520 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS