Materials and Construction White metal is an alloy of Copper and lead Copper, tin and zinc None of these Lead, tin and cadmium Copper and lead Copper, tin and zinc None of these Lead, tin and cadmium ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Presence of silicon in steel Is in the form of free Si Decreases the blow holes formation tendency in castings Indicates that steel is not deoxidised properly None of these Is in the form of free Si Decreases the blow holes formation tendency in castings Indicates that steel is not deoxidised properly None of these 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%)? Armature of small motors/generators Generators and small motors Induction motors High frequency transformers Armature of small motors/generators Generators and small motors Induction motors High frequency transformers ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Aluminium as a material of construction suffers from the disadvantage of Scarce availability Rather low tensile strength Very low strength to weight ratio Very high cost Scarce availability Rather low tensile strength Very low strength to weight ratio Very high cost ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction The specific gravity of coal depends mainly on its __________ content. Moisture Carbon Ash Volatile matter Moisture Carbon Ash Volatile matter ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Age hardening is concerned with Silver Duralumin Brass Copper Silver Duralumin Brass Copper ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS