Refractory Technology Pyrometric cone equivalent (PCE) value (Segar cone) of 'superduty refractories' is more than 33 which corresponds to a temperature of __________ °C. 1630 1670 1520 1730 1630 1670 1520 1730 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Semi-silica bricks compared to silica bricks have Better spalling resistance Less fusion point Both A & B Neither A nor B Better spalling resistance Less fusion point Both A & B Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Resistance to slag attack of a refractory Decreases at higher temperature Depends on the nature of slag & refractory All of these Decreases, if defective joints & cracks exist in the refractory Decreases at higher temperature Depends on the nature of slag & refractory All of these Decreases, if defective joints & cracks exist in the refractory ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractory materials are never used in the construction of Orton cones Ovens & retorts Pressure vessels Segar cones Orton cones Ovens & retorts Pressure vessels 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? Sand Chemically prepared foam Saw dust Cork Sand Chemically prepared foam Saw dust Cork ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Ferromagnetic ceramic material is not used in the Television sets Magnetic switches Thermal insulation Transformers Television sets Magnetic switches Thermal insulation Transformers ANSWER DOWNLOAD EXAMIANS APP
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