(d) damping characteristics (a) silver, copper, zinc (b) free carbon Engineering Materials MCQ question is the important chapter for a Mechanical Engineering and GATE students. (e) none of the above. (e) none of the above. Ans: d, 183. (d) wrought iron, grey cast iron, low carbon steel Acidic solution is one which has pH value (a) gamma iron (910° to 1400°C), Cu, Ag, Au, Al, Ni, Pb, Pt Pearlite is a combination of It is almost unmachinable (d) 250 VPN (d) 0.7 to 0.9% (b) manganese in steel induces hardness Ans: d, 192. Ans: c, 171. (d) chromium, nickel (b) face centred cubic (d) tungsten, molybdenum, vanadium, chromium (c) asbestos cement (c) all non-ferrous materials The ultimate tensile strength of low carbon steel by working at a high strain rate will (b) %age of alloying elements Ans: e, 43. Ans: c, 90. Ans: a, 30. (a) 50 : 50 (b) 2.5% silver A cold chisel is made of (a) %age of carbon (e) cold hardness. (e) (a) and (c) above. Preheating is essential in welding (e) 90% magnesium and 10% tin. 1. A reversible change in the atomic structure of the steel with a corresponding change in the properties is known as (c) heat treatment (c) remain constant (a) amount of carbon it contains (c) plane defect (a) tensile strength (a) mild steel (e) none of the above. (e) hardness. (a) austenite Induction hardening is the process of (d) method of manufacture Ans: c, 63. Pure iron is the structure of Specially developed for the Mechanical Engineering freshers … (c) 1022 Mechanical Engineering MCQ questions and answers for an engineering student to practice, GATE exam, interview, competitive examination and entrance exam. (b) 1601°C (e) 7-9%. (c) copper, nickel and antimony Mechanical Engineering MCQ questions and answers especially for the Mechanical Engineer and who preparing for GATE Exam. (b) ability to recover its original form Pick up the wrong statement Nickel and chromium in steel help in (e) piston I.C. 3. (c) lead Engineering Materials - Mechanical Engineering (MCQ) questions and answers. Material … GATE, IES, SSC JE, RRB JE, CSIR, Previous Solved Paper, Exams Syllabus, Handwritten notes, Study Material Pdf Download, Exam Preparation strategy. (b) basic (d) 1040 Addition of silicon to aluminium results in (e) white iron. (d) copper and nickel (d) soften material (b) pig iron The composition of silver solder is (b) cast iron (b) face centred cubic (c) remain same (d) RC 80 (c) which are deoxidised in the ladle with silicon and aluminium (c) intermetallic compounds (c) lead (c) increasing hardness throughout Latest Engineering Materials Questions and Answers List 1. (e) pearlite and ferrite. (b) 1 – 2% Ans: d, 79. (e) sulphur, phosphorous and lead im¬prove machining properties of steel. contains the following element as principal alloying element (e) none of the above. (e) corrosion resistance is good. Nickel in steel Ans: b, 7. In which of the following cases, consideration of creep is important (c) above 1% It i: almost unmachinable (b) decrease (c) stainless steel Austenite rs a combination of (d) gives ductility, toughness, tensile strength and anticorrosion properties (b) sulphur, phosphorus, lead (d) babbit metal (c) high ductility (e) none of the above. Corrosion resistance of steel is increased by adding Drop forging dies contain carbon of the order of (a) at which crystals first start forming from molten metal when it is cooled The metallic structure of mild steel is (d) 0.55 to 1.0% (a) raw material for blast furnace (c) allotropic change 2. Surveying tapes are made of a material having low coefficient of expansion and enough strength. Which of the following has highest specific strength of all structural materials Which is the false statement about wrought iron. (a) hot hardness Ans: b, 123. (b) 92.5% aluminium and, 4% copper, 2% nickel and 1.5% Mg Ans: a, 149. need previous year questions paper for delhi metro rail coopeartion, If you have pdf of all subject in electrical engineering please mail me at- [email protected] and answers on Mechanical Engineering MCQ questions on Mechanical Engineering objectives questions with answer test pdf for interview preparations, freshers jobs and competitive exams. (d) above 2.2% (d) flat form Hardness of lower bainite (tempered martensite) is about (a) electroplating Ans: e, 75. (e) silver, lead, tin. Ans: a, 118. Ans: d, 181. (a) nichrome (a) 1010 Which of the following constituents of steels is softest and least strong (c) 0.45 to 0.55% MATERIAL SCIENCE 240 MCQ PDF DOWNLOAD February 14, 2020. (b) RC 48 Graphite is in the nodular or spheroidal form and is well dispersed throughout the material Ans: b, 35. (d) malleable iron (a) 94% aluminium, 4% copper and 0.5% Mn, Mg, Si and Fe (d) carbon-chrome steel (d) germanium (d) 90% magnesium and 9% aluminium with some copper The percentage of carbon in grey iron castings usually varies between (d) 20 : 80 (a) F.C.C. (b) 910°C Ans: d, 72. (d) isotropic Ans: a, 154. (d) high carbon Ductility of a material can be defined as (a) ability to undergo large permanent deformations in compression (b) ability to recover its original form (c) ability to undergo large permanent deformations in tension (d) all of the above (e) none of the above. (c) decreases tensile strength and hardness Ans: b, 65. (b) free carbon (c) H.C.P. (e) above 1000°C. (e) none of the above. (b) is also known as chilled cast iron am is obtained by cooling rapidly. (c) aluminium (b) carburised structure Ans: e, 40. Ans: a, 169. Ans: e, 165. (e) silver. (e) german silver. Balls for ball bearings are made of (d) 70-78% copper and rest tin (b) chromium (a) 50 : 50 MECHANICAL ENGINEERING QUIZ. (d) a complex cubic structure (a) cementite (e) tin, copper and lead. (a) purification of metal Ans: c, 135. (a) lead base alloy Ans: c, 34. (d) plastic deformation (a) greater than 7 (b) increase Ans: a, 54. (c) is produced by annealing process. (b) It melts at 1535°C (d) all of the above (c) cementite (c) RC 57 (d) wrought iron Delta iron occurs at temperature of (d) 30 : 20 : 30 : 20 (d) annealing Admiralty brass used for steam condenser tubes contains copper and zinc in the following ratio (a) improvement of casting characteristics (c) plastic (b) hard (b) soft German silver is an alloy of (c) less than 7 The permissible stress for carbon steel under static loading is generally taken as (a) 2000-3000 kg/pm2 (b) 3000-4000 kg/cm2 (c) 4000-4500 kg/cm2 (d) 7500-10,000 kg/cm2 (e) 10,000-15,000 kg/cm2. (a) substitutional solid solution (b) 92.5% aluminium, 4% copper, 2% nickel, and 1.5% Mg (b) constant for all metals (d) silicon Chilled cast iron has (a) gun metal (c) anstenite Cast iron has (b) toughness (b) reacting steel surface with cyanide salts (e) 80 : 20. (d) fluidity so, you have come on a right place. (d) iron scrap and zinc (e) at which crystals are destroyed on heating. Ans: c, 5. (c) in direction perpendicular to application of load (e) mild steel. (b) graphite (d) induce stresses- (d) easily weldable characteristics (e) carbon-chrome steel. Remedial exam is conducted by dbatu university after every semester exam for the students failing in regular end sem exam. (c) german silver (e) brass. (adsbygoogle = window.adsbygoogle || []).push({}); Engineering interview questions,Mcqs,Objective Questions,Class Lecture Notes,Seminor topics,Lab Viva Pdf PPT Doc Book free download. (a) point defect Ans: a, 6. Professionals, Teachers, Students and Kids Trivia Quizzes to test your knowledge on the subject. 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. (c) an alloy of iron and carbon with varying quantities of phosphorus and sulphur (a) nickel, copper and iron The loss of strength in compression with simultaneous gain in strength in tension due to overloading is known as Admiralty gun metal contains (e) adding copper and carbon. (a) iron Ans: c, 48. These are the selective and important questions of Mechanical Engineering. (d) cast steel (e) chemical defect. (d) It can be easily forge welded (e) silicon bronze. Cupola produces following material (c) induction hardening (c) 70 : 30 (d) cubic structure Ans: d, 105. (d) zinc, sulphur, and chromium (d) alpha iron, gamma from and delta iron (a) 94% aluminium, 4% copper and 0.5% Mn, Mg, Si and Fe Which is false statement about annealing. (c) 2.5% phosphorous (e) none of the above. (c) a iron (below 910°C and between 1400 to 1539°C), W (e) 15-22. (c) chromium alloys (d) is produced by small additions of magnesium (or cerium) in the ladle. (a) providing corrosion resistance (a) are used where ease in machining is the criterion (d) elinvar (b) the shape and distribution of the car-bides in iron (c) improve machining characteristic (a) 63 to 67% nickel and 30% copper Ans: e, 164. (d) Boeschinger effect (e) pearlite and ferrite. Ans: b, 122. (c) hot hardness It is soft, tough and easily machined metal (b) cast iron Ans: d, 174. Ans: d, 152. The following types of materials are usually the most ductile (c) nodular form (a) no graphite (a) 770°C (a) improvement of casting characteristics (a) aluminium in steel results in excessive grain growth Ans: b, 146. (e) unpredictable behaviour. (c) is produced by annealing process. Ans: c 2. (a) improves wear resistance, cutting ability and toughness Nodular iron has Fluid Mechanics PART 1 . (e) none of the above. (d) iron (b) martensite (d) improving machinability (b) 90% copper and 10% tin (d) improving machinability Malleability of a material can be defined as (c) polymer 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. (a) cementite (e) 1.5%. 5. It is almost unmachinable Ans: c, 16. Structural steel contains following principal alloying elements (c) uniform in all directions Ans: d, 36. (a) 0.5 to 1% Ans: a, 98. Ans: b, 172. Ans: b, 17. (c) cycle chains (d) unpredictable (a) greater than 7 Ans: a, 176. (a) decrease (d) sharp cutting edge (d) 82% Sn, 4% Cu, 8% Sb, 3% Al, 3% Mg (e) none of the above. (e) nodular aggregates of graphite. (c) is produced by annealing process. (e) invar. (a) tin, antimony, copper Ans: e, 132. (a) improves wear resistance, cutting ability and toughness (b) copper (d) cubic structure Dislocations in materials refer to the following type of defect crystalline structure (e) surface finish. (c) high tensile strength By severely deforming a metal in a particular direction it becomes Which of the following is the binding material in cemented carbides (e) above recrystallization temperature. (e) RC 32. (c) 2.5 to 4% Set of model questions for dbatu remedial exam for first year, second year and third year B.Tech Mechanical Engineering have been published in pdf format. (d) iron in molten form in the ladles (e) all of the above. Ans: a, 104. Mechanical Engineering-IV Semester-Lecture Notes Click here to Download: Mechanical Engineering-V Semester-Lecture Notes Click here to Download: Mechanical Engineering-VI Semester-Lecture Notes Click here to Download: Mechanical Engineering-VII Semester-Lecture Notes Click here to Download: Mechanical Engineering-VIII Semester-Lecture Notes (b) is also known as chilled cast iron and is obtained by cooling rapidly. Eutectoid steel contains following percentage of carbon It has (c) bell metal (b) body-centred cubic lattice These objective type Strength of Materials questions are very important for campus placement test, semester exams, job interviews and competitive exams like GATE, IES, PSU, NET/SET/JRF, UPSC and diploma. (d) tungsten in steels improves magnetic properties and hardenability (d) contents of alloying elements Please send me the pdf of MCQ with ans of Metallurgy & Material engineering in my email:- [email protected] or [email protected] premkumar.k says: August 12, 2016 at 4:36 am (e) none of the above. (b) which after their destruction are recycled to produce fresh steel Ans: a, 99. (e) none of the above. Mechanical Engineering. (e) special heat treatment. Ans: c, 124. (e) copper. Heavy duty leaf and coil spring* contain carbon of the following order Ans: b, 120. (e) austempering. Corrosion resistance of steel is increased by addition of Ans: d, 177. The correct sequence for descending order of machinability is (b) 0.3 to 0.6% If you don't see any interesting for you, use our search form on bottom ↓ . (b) tin and lead (a) hysteresis (c) is produced by annealing process. (b) invar (b) high ductility Case hardening is done by (c) cast iron (d) high carbon steel (d) 70-75% copper and rest tin Ans: c, 130. (e) orthorhombic crystalline structure. (d) duralumin (b) at which new spherical crystals first begin to form from the old deformed one when a strained metal is heated (a) RC 65 (d) phosphorous and aluminium (b) ferromagnetic Ans: b, 4. (c) 85-92% copper and rest tin with little lead and nickel (a) 80% or more iron (e) cast iron steel. Ans: a, 78. Which of the following represents the allotropic forms of iron (c) vanadium (d) gives ductility, toughness, tensile strength and anticorrosion properties Monel metal contains Ans: a, 121. (a) kind of stainless steel (e) 50 : 10 : 20 : 20. (d) all of the above (b) monel metal Ans: d, 151. (e) none of the above. (b) stresses induced in all directions (b) in which there is no definite atomic structure and atoms exist in a random pattern just as in a liquid (d) do not exist (d) ferrite and cementite (b) malleable Encrypting your link and protect the link from viruses, malware, thief, etc! (e) making corrosion resistant steel. (a) 63 to 67% nickel and 30% copper (b) physical change (d) 0.5% Ans: d, 117. (b) in a haphazard way Download Mechanical Engineering Fifth Semester Subjects MCQ (Multiple Choice Questions) Collection. The hardness of steel increases if it contains Which of the following alloys does not have copper as one of the constituents (d) cast iron (a) high tensile strength Which of the following pipes is least corrosion resistant This the post provides estimate 1000++ MCQ Mechanical Engineering question which is helping all world students for their competitive exam’s preparations. (c) manganese (d) back and forth like tiny pendulums Mild steel belongs to the following category (a) 87.75% Sn, 4% Cu, 8% Sb, 0.25% Bi (d) phosphor bronze Ans: a, 3. (b) improving machining properties (d) silicon Strength of Materials Questions And Answers Objective Type for Mechanical Engineering is given below. (b) it brittle (a) 0.02% (b) 0.5% Ans: b, 112. Chromium in steel (b) 5-7 (e) orthorhombic crystal. I is soft, tough and easily machinec metal (c) improves cutting ability and reduces hardenability (d) 2% Ans: a, 145. (c) wear resistance (d) 5% phosphorous (c) forms very hard carbides and thus in-creases wear resistance Tungsten in high speed steel provides Ans: d, 155. (b) a very high percentage of graphite Which of the following alloys does not contain tin Ans: b, 170. (c) hexagonal close packed (b) low carbon steel, grey cast iron, wrought iron Phosphor bronze contains (e) 85-92% copper and rest zinc. (d) tungsten and sulfur Gamma iron exits at following temperature (e) orthorhombic crystal. (d) obtaining cyanide salts Ans: a, 133. (b) 770 – 910°C The collected materials will help the students to making practice for the upcoming online Examination 2020. Ans: a, 21. (e) lead and copper. For the allotropic forms of iron, the points of arrest are (a) improvement of casting characteristics (c) Hastelloy (a) room temperature (c) improve toughness (c) ferrite and austenite Dear Readers, Welcome to Strength of Materials multiple choice questions and answers with explanation. (b) improvement of corrosion resistance Ans: c, 188. (b) nitriding of surface Engine Objective Questions (b) solder admiralty (a) ability to undergo large permanent deformations in compression (d) 10% silver INDUSTRIAL ENGINEERING Multiple choice Questions :-1. (a) 0.05 to 0.20% [email protected], need mechanical engg PDF of all subject mcq & other questions answer ..plz send me in my email- [email protected], send me PDF file MATERIAL SCIENCE ONLINE BITS, sir please send me pdf link to my mail id, I need mechanical engg PDF of all subject mcq & other questions answer ..plz send me in my email- [email protected], Babit Metel is ally of tin .. not copper n lead .. questions no 184, Sir pls send me mehanical engg files to my email [email protected], something wrong with the answer of 168 or 177, compare it, Hello sir.. (a) creep (c) 0.4% (a) nickel Ans: a, 167. Ans: a, 127. Manganese in steel increases its 2. (b) ductility (e) aluminium. (b) cementite and gamma iron (b) above 100°K (a) below 0.5% Ans: c, 179. Maximum percentage of carbon in austenite is (e) white iron. (e) 100% silver. (a) linear (e) anisotropic. (d) 40 : 60 (c) body centred cubic a-iron and face centred cubic a-iron (e) first decrease and then increase. 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