Refractory Technology High refractorinness of refractory bricks means, that it has a High resistance to fusion High spalling resistance Low spalling resistance Low porosity High resistance to fusion High spalling resistance Low spalling resistance Low porosity ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Roof of a basic electric furnace is made of __________ bricks. Superduty fireclay Silica Chromite None of these Superduty fireclay Silica Chromite None of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractory materials are never used in the construction of Pressure vessels Ovens & retorts Orton cones Segar cones Pressure vessels Ovens & retorts Orton cones Segar cones ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology An insulating refractory brick should have high porosity and low thermal conductivity. Which of the following is not used for inducing porosity in the insulating refractory bricks during its manufacture? Cork Sand Chemically prepared foam Saw dust Cork Sand Chemically prepared foam Saw dust ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology What is Thoria? Which is expensive & radioactive, is used in crucibles for melting high purity metals All of these Thoria Has high resistance to basic slags Thoria Has high fusion temperature (> 3000°C) but poor resistance to thermal shock Which is expensive & radioactive, is used in crucibles for melting high purity metals All of these Thoria Has high resistance to basic slags Thoria Has high fusion temperature (> 3000°C) but poor resistance to thermal shock ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Si percentage in silica refractories used in the walls of coke oven is about 45 95 60 80 45 95 60 80 ANSWER DOWNLOAD EXAMIANS APP
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