Materials and Construction Which of the following is the most widely used insulating material for steam carray-ing pipelines? Slag wool Vermiculite Glass wool and 85% magnesia Ceramic fibre blanket Slag wool Vermiculite Glass wool and 85% magnesia Ceramic fibre blanket 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 Generators and small motors Induction motors Armature of small motors/generators High frequency transformers Generators and small motors Induction motors Armature of small motors/generators ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Which one is remelted and poured into moulds to get cast iron? Wrought iron Pig iron Mild steel Low carbon steel Wrought iron Pig iron Mild steel Low carbon steel ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Which of the following is not a non-ferrous alloy? Meehanite Muntz metal Magnalium Gun metal Meehanite Muntz metal Magnalium Gun metal ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Work hardening of a material Does not affect its ductility Increases its ductility Decreases its ductility Decreases its tensile strength Does not affect its ductility Increases its ductility Decreases its ductility Decreases its tensile strength ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Presence of even 0.005% of __________ in copper makes it highly brittle, rendering it useless for wire-drawing. Bismuth Arsenic Antimony Oxygen Bismuth Arsenic Antimony Oxygen ANSWER DOWNLOAD EXAMIANS APP
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