Refractory Technology With increase in the alumina content, the refractoriness of high alumina refractories Decreases Increases Remains same May increase or decrease Decreases Increases Remains same May increase or decrease ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Roof of a basic open hearth furnace is lined with __________ bricks. Silica Dolomite Magnesite Fireclay Silica Dolomite Magnesite Fireclay ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Thermal diffusivity of a refractory brick is high, when its __________ is high. Density None of these Specific heat Thermal conductivity Density None of these Specific heat Thermal conductivity ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Electrical resistor bars are made of Zirconia Silicon carbide Alumina Graphite Zirconia Silicon carbide Alumina Graphite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Except __________ , all other refractories are bad conductors of electricity (i.e, have low electrical conductivity). Carborundum Fireclay Chromite Graphite Carborundum Fireclay Chromite Graphite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Zircon refractories have All of these High RUL (1600°C) and refractoriness (> 2000°C) Low co-efficient of expansion High spalling resistance All of these High RUL (1600°C) and refractoriness (> 2000°C) Low co-efficient of expansion High spalling resistance ANSWER DOWNLOAD EXAMIANS APP
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