Refractory Technology Presence of MgO in alumino-silicate refractories __________ its refractoriness. Increases Lowers Either A or B; depends on its quantity Does not affect Increases Lowers Either A or B; depends on its quantity Does not affect ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Thermal diffusivity of a refractory brick is high, when its __________ is high. Specific heat None of these Thermal conductivity Density Specific heat None of these Thermal conductivity Density ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractory materials are never used in the construction of Ovens & retorts Segar cones Orton cones Pressure vessels Ovens & retorts Segar cones Orton cones Pressure vessels ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Maximum apparent porosity of magnesite bricks is about __________ percent. 8 58 24 44 8 58 24 44 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Spalling tendency of refractories is reduced by increasing its Thermal conductivity Strength Porosity Specific gravity Thermal conductivity Strength Porosity Specific gravity ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Cold crushing strength of fireclay bricks is about __________ kgf/cm². 500-1000 50-100 200-400 100-150 500-1000 50-100 200-400 100-150 ANSWER DOWNLOAD EXAMIANS APP
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