(d) magnetic steel alloys (C) flakes (a) copper, zinc and iron (e) permit further cold working. Admiralty gun metal contains (e) bainite. (c) induction hardening (e) iron scrap. (c) between 910°C and 1400°C (a) improvement of casting characteristics Neutral solution is one which has pH value DuraJomin contains Large forgings, crank shafts, axles normally contain carbon up to Ans: d, 73. 1. (d) spheroids (d) iron, aluminium and magnesium An important property of malleable cast iron in comparison to grey cast iron is the high (e) unpredictable behaviour. Click on the Subject Name to Brows the Mechanical MCQ of that subjects. (e) german silver. (b) 1500 VPN (a) room temperature (d) nitriding Ans: a, 147. Ans: a, 104. (d) wrought iron, grey cast iron, low carbon steel Ans: b, 94. (b) RC 48 Ans: c, 157. Slow plastic defomiation of metals under a constant stress is known as Download Mechanical Engineering Fifth Semester Subjects MCQ (Multiple Choice Questions) Collection. (e) anisotropic. Ans: a, 42. Ans: a, 64. (d) spheroids The machinability of steel is increased by (a) cast iron (e) peiminvar. (a) molecular change Free cutting steels (c) silicon (a) room temperature (a) ferrite and cementite Ans: d, 151. (c) working at lower temperature Tungsten in high speed steel provides (e) cast iron. (b) reacting steel surface with cyanide salts (b) contain carbon in free form (c) fatigue strength is not high (b) 90% copper and 10% tin Solder is an alloy consisting of (c) wrought iron,low carbon steel, grey cast iron (d) wrought iron (c) carbon content Ans: a, 136. Annealing is done to (b) sulphur Ans: a, 96. Mechanical Engineering all Subjects Multiple Choice Questions with Answers Practice Test Series: To download the e-books, pdf file of all Mechanical Engineering Subjects Practice Tests with Answers + Mechanical Technical Interview, go to E-books Corner. (e) none of the above. (e) 1052 Dislocations in materials refer to the following type of defect Ans: a, 113. (a) at which crystals first start forming from molten metal when it is cooled crystalline structure (d) iron (a) magnesium alloys If a refractory contains high content of silicon, it means refractory is (d) gas turbine blades Ans: e, 58. (b) perpendicular to lines of slag distribution (c) hot hardness (e) 1.7%. need previous year questions paper for delhi metro rail coopeartion, If you have pdf of all subject in electrical engineering please mail me at- jeevanshinde7755@gmail.com. (e) none of the above. (b) alloy steel (e) 50 : 10 : 20 : 20. (b) product of blast furnace made by reduction of iron ore Ans: a, 30. (d) malleable iron (b) 40 : 60 (c) Hastelloy Ans: d, 60. (c) equal to 7 Ans: a, send me a mechanical oriented multi choice question, hi sir (b) tempering The number of electrons in 1 cm3 of metal would be of the order of Ans: a, 23. (c) decreases tensile strength and hardness Ans: a, 87. Ans: b, 189. (a) malleability Ans: b, 51. Ans: d, 175. (c) is produced by annealing process. It is almost unmachinable (d) annealing Ans: d, 24. (a) delta metal (d) nickel, lead and tin (d) Orthorhombic crystalline structure Carbon in iron is an example of (b) 92.5% aluminium, 4% copper, 2% nickel, and 1.5% Mg Brass contains (a) cementite Ans: c, 70. (e) 85-92% copper and rest zinc. (d) cubic structure Ans: d, 84. Surveying tapes are made of a material having low coefficient of expansion and enough strength. The tensile strength of wrought iron is maximum (e) silicon bronze. (e) 60 : 40. (a) zinc (c) 0.45 to 0.55% (b) 0.8% (e) zinc. (c) in which deformation tends to loosen the joint and produces a stress reduced (c) flakes Cast iron has (b) ferromagnetic (a) 50 : 50 (a) improves wear resistance, cutting ability and toughness The ultimate tensile strength and yield strength of most of the metals, when temperature falls from 0 to l00°C will (d) all of the above Home; ENGINEERING DRAWING; Engineering; MOTOR VEHICLE ACT 1988; CENTRAL MOTOR VEHICLE RULE 1989; AUTOMOBILE MCQ; COMPUTER SCIENCE; Download This Template; Home / Unlabelled / MATERIAL SCIENCE 240 MCQ PDF DOWNLOAD. (d) silicon (c) 85-92% copper and rest tin with little lead and nickel (a) tin, antimony, copper Ans: d, 129. Multiple choice questions here are on topics such as Machine Design, Theory of Machines, Hydraulic Machines etc. (a) 0.5 to 1% Ans: d, 32. (b) improving machining properties (c) a iron (below 910°C and between 1400 to 1539°C), W Ans: c, 158. (e) above recrystallization temperature. Ans: a, 187. The most effective inhibitor of grain growth, when added in small quantities is Ans: e, 75. (e) none of the above. Engineering (design and Build) have Lot’s of Branches, and here we will Share with you all detailed Knowledge of Mechanical engineering with the help of Best Books & Notes.. Dear Engineering Students or Interested Visitors, if you are searching for free study material/study stuff and Learning Courses of Mechanical Engineering. Ductility of a material can be defined as ENERGY ENGINEERING MULTIPLE CHOICE QUESTION I ANSWERS SPPU MECHANICAL ENGINEERING 201& PATTERN s Unit 1: Introduction and Ans: b, 68. (e) RC 32. (c) 1050°C (c) sulphur, graphite and aluminium An important property of high silicon (12 – 18%) cast iron is the high mail id :arunpandiyan51995@gmail.com, could you send me the questions pdf related to Materials and Metallurgical Engineering to the following e mail id? (c) pearlite Ans: a, 46. Ans: e, 164. (e) none of the above. (c) wear resistance (b) refined from cast iron (b) physical change 5. (d) silicon Recrystallization temperature is one Bell metal contains (a) silver and some impurities (a) 0.02% (d) graphite as its basic constituent of composition (c) high carbon (d) 1040 (b) B.C.C. (d) extensively used for making cutting tools (c) at which change of allotropic form takes place It is soft, tough, and easily machined metal (a) are used where ease in machining is the criterion 1. (c) normalising Ans: b, 144. (a) which are destroyed by burning (e) none of the above. 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