This set of Engineering Materials & Metallurgy Multiple Choice Questions & Answers (MCQs) focuses on “Welding”. 1. The welding process in which no filler metal is used is classified as ___________ a) Autogenous b) Homogeneous c) Heterogeneous d) Fusion 2. The pressure of acetylene in welding torch for oxy-acetylene welding is maintained at _________ a) … Read more
This set of Engineering Materials & Metallurgy Multiple Choice Questions & Answers (MCQs) focuses on “Selective Hardening”. 1. Flame hardening can only be performed on steels with a minimum of ______ carbon. a) 0.4% b) 0.8% c) 1.2% d) 1.8% 2. How is the heating of surface done in flame hardening technique? a) Oxy-acetylene torch … Read more
This set of Advanced Engineering Materials and Metallurgy Questions and Answers focuses on “Nitriding, Cyaniding and Carbonitriding – 2”. 1. Which of the following does not apply to cyaniding? a) Requires less time b) Operated at lower temperatures c) Low corrosion resistance d) Costly process 2. Gas cyaniding is otherwise known as __________ a) Nitriding … Read more
This set of Engineering Materials & Metallurgy Multiple Choice Questions & Answers (MCQs) focuses on “Nitriding, Cyaniding and Carbonitriding – 1”. 1. Nitriding involves the addition of ___________ for the hardening of surface. a) Nitrogen b) Nichrome c) Neon d) Niobium 2. Which of the following is required for the nitriding process? a) Carbon b) … Read more
This set of Engineering Materials & Metallurgy Multiple Choice Questions & Answers (MCQs) focuses on “Carburizing”. 1. The treatment of steel to get a stronger casing while maintaining a soft core is called _________ a) Surface hardening b) Tempering c) Sintering d) Surface lining 2. Which of the following is not a diffusion method of … Read more
This set of Engineering Materials & Metallurgy Multiple Choice Questions & Answers (MCQs) focuses on “Interrupted Quenching”. 1. Quenching of austenite steel for martempering is done using __________ a) Furnace b) Still air c) Cooling tower d) Hot oil 2. How can temperature differences between center and surface be prevented? a) Refined grain structure b) … Read more
This set of Engineering Materials & Metallurgy Multiple Choice Questions & Answers (MCQs) focuses on “Tempering”. 1. Which of the following is not a result of tempering? a) Increased ductility b) Improved toughness c) Increased electrical conductivity d) Internal stresses are relieved 2. Tempering of martensite steel is done _________ a) Below eutectic temperature b) … Read more
This set of Engineering Materials & Metallurgy Multiple Choice Questions & Answers (MCQs) focuses on “Hardening and Hardenability”. 1. For hardening of steel by quenching, the steel is cooled in __________ a) Furnace b) Still air c) Oil bath d) Cooling tower 2. The cooling rate must be _________ the critical cooling rate for hardening … Read more
This set of Engineering Materials & Metallurgy Multiple Choice Questions & Answers (MCQs) focuses on “Transformation Diagrams”. 1. Non-equilibrium phases are shown for their time and transformation using _________ a) Fe-Fe3C diagram b) TTT diagram c) CCT diagram d) TTT and CCT diagram 2. The CCT or the TTT diagrams are used for _________ a) … Read more
This set of Engineering Materials & Metallurgy Multiple Choice Questions & Answers (MCQs) focuses on “Normalising & Quenching”. 1. How is cooling of the material done is normalising process? a) Furnace b) Cooling tower c) Still air d) Liquid chamber 2. Normalising is best used for is what kind of materials? a) Steel castings b) … Read more
