Materials and Construction In a plate type heat exchanger, heat transfer plates are never made of Stainless steel Cast iron Hastealloy C Titanium Stainless steel Cast iron Hastealloy C Titanium ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Molybdenum steels containing 0.15 to 0.40% molybdenum Have very poor fatigue resistance Do not contain nickel or chromium or both Are prone to temper brittleness Are used for automobile parts like gears, axle, shaft, bearings etc Have very poor fatigue resistance Do not contain nickel or chromium or both Are prone to temper brittleness Are used for automobile parts like gears, axle, shaft, bearings etc ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction The main purpose of galvanising iron sheets is to Increase its glossiness and lustre Prevent the action of oxygen Harden the surface Prevent the action of water Increase its glossiness and lustre Prevent the action of oxygen Harden the surface Prevent the action of water 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%)? Induction motors Generators and small motors Armature of small motors/generators High frequency transformers Induction motors Generators and small motors Armature of small motors/generators High frequency transformers ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction The maximum percentage of chromium that can be added to steel is about 18 30 12 24 18 30 12 24 ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction German silver is an alloy of copper, nickel and Zinc Tin Silver Lead Zinc Tin Silver Lead ANSWER DOWNLOAD EXAMIANS APP
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