Materials and Construction Cast iron has Very high tensile strenth Elastic limit close to ultimate breaking strength High malleability High ductility Very high tensile strenth Elastic limit close to ultimate breaking strength High malleability High ductility ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Straight silicon steel (containing Si from 0.5 to 5%) because of their low hysterisis loss and high magnetic permeability are used for electrical appliances. Which of the following electrical appliances made of silicon steel contains maximum percentage of silicon (about 4%)? High frequency transformers Armature of small motors/generators Induction motors Generators and small motors High frequency transformers Armature of small motors/generators Induction motors Generators and small motors ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction The main constituent of carborundum is __________ carbide. Boron Calcium Aluminium Silicon Boron Calcium Aluminium Silicon ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Constantan used in thermocouples is an alloy of Iron & copper Copper & aluminium None of these Lead & tin Iron & copper Copper & aluminium None of these Lead & tin ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Silicon percentage in iron castings to have maximum hardness should be about 2.5 0.8 0.3 0.5 2.5 0.8 0.3 0.5 ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Bog iron used for the adsorption of H?S from coke oven gas is None of these An intimate mixture of saw dust and iron dust (i.e. moist ferric hydroxide) Iron impregnated with resin (usually bakelite) Carbon free iron None of these An intimate mixture of saw dust and iron dust (i.e. moist ferric hydroxide) Iron impregnated with resin (usually bakelite) Carbon free iron ANSWER DOWNLOAD EXAMIANS APP
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