Refractory Technology Except __________ , all other refractories are bad conductors of electricity (i.e, have low electrical conductivity). Carborundum Chromite Graphite Fireclay Carborundum Chromite Graphite Fireclay ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology __________ is not a single oxiderefractory. Magnesia None of these Silicon carbide Zirconia Magnesia None of these Silicon carbide Zirconia ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology To resist spalling tendency, a refractory should have Low thermal co-efficient of expansion All of these Low specific heat Greater diffusivity Low thermal co-efficient of expansion All of these Low specific heat Greater diffusivity ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which of the following has the lowest electrical resistivity? Alumina Fireclay Zircon Graphite Alumina Fireclay Zircon Graphite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Porosity of silica bricks varies from __________ percent. 5 to 10 20 to 30 45 to 60 60 to 75 5 to 10 20 to 30 45 to 60 60 to 75 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fireclay bricks is not used for lining the Roof of open hearth furnace Cupola Gas producer Bottom of hot metal mixer Roof of open hearth furnace Cupola Gas producer Bottom of hot metal mixer ANSWER DOWNLOAD EXAMIANS APP
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