Materials and Construction __________ is a donor impurity for semi-conductors. None of these Gallium Antimony Boron None of these Gallium Antimony Boron ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Which of the following is not used as the ceramic material in 'cermets'? Carbides Silicides Oxides Nitrides Carbides Silicides Oxides Nitrides ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Monel alloy is Not suitable for making kitchen utensils Used for making steam valves and turbine blades as it resists steam attack at high temperature Not used in cast and wrought forms The costliest of all the alloys of nickel Not suitable for making kitchen utensils Used for making steam valves and turbine blades as it resists steam attack at high temperature Not used in cast and wrought forms The costliest of all the alloys of nickel ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Which of the following is universally employed as the low expansion metal in the bimetallic thermometer, which is an iron-nickel alloy containing 36% nickel and has very low co-efficient of expansion (l/20th of ordinary metals)? Alumel Invar Constantan Chromel Alumel Invar Constantan Chromel ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Nitriding of steel is done (in electric furnace) at __________ °C. 1720 510 910 2210 1720 510 910 2210 ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Which of the following finds the least commercial use? High carbon steel Low carbon steel Pure iron High silicon iron High carbon steel Low carbon steel Pure iron High silicon iron ANSWER DOWNLOAD EXAMIANS APP
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