Tempering is done to (e) white iron. (e) none of the above. (b) reacting steel surface with cyanide salts (e) iron scrap. (d) 1400-1539°C Ans: d, 28. (a) 94% aluminium, 4% copper and 0.5% Mn, Mg, Si and Fe Manganese in steel increases its (d) promotes retention of austenite (c) responds to heat treatment (b) 40 : 60 (a) improves wear resistance, cutting ability and toughness Ans: a, 25. (e) partly in free and partly in combined state. Admiralty gun metal contains Ans: a, 167. Recrystallisation temperature can belowered by (a) iron (e) none of the above. (c) Si02 Practice Test: Question Set - 07 1. (a) flywheel of steam engine Ans: a, 191. (b) sulphur (c) nickel, chromium (e) brass. Ans: b, 112. (e) raises its melting point. (d) malleable iron (d) alloy steel (c) in which deformation tends to loosen the joint and produces a stress reduced (b) near melting point (d) 82% Sn, 4% Cu, 8% Sb, 3% Al, 3% Mg (d) concrete (e) nodular aggregates of graphite. (b) A1203 (d) first increase and then decrease (a) 94% aluminium, 4% copper and 0.5% Mn, Mg, Si and Fe (b) nodular iron Eutectoid steel contains following percentage of carbon Aluminium bronze contains aluminium and copper in the ratio of 4. (c) aluminium (c) non-ferrous materials All MCQ Quiz on Mechanical Engineering have answers available with pdf. Ans: a, 100. Ans: c, 128. (c) nickel and chromium in steel help in raising the elastic limit and improve the resilience and ductility Addition of lead and bismuth to aluminium results in (b) creep Corrosion resistance of steel is increased by adding (a) point defect (d) 70-75% copper and rest tin (d) elements like phosphorus, sulphur and silicon in varying quantities (a) by forming a bulge (l>) by shearing along oblique plane Ans: d, 174. (b) stages at which further heating does not increase temperature for some time (c) endurance Ans: a, 74. (a) has a fixed structure under all conditions (d) cementite (b) invar (e) none of the above. (c) one of the best known age and precipitation-hardening systems (a) B.C.C. Ans: d, 95. Ans: b, 94. Multiple Choice Questions with Answers on Refrigeration and Air-Conditioning - Set 07. (adsbygoogle = window.adsbygoogle || []).push({}); Engineering interview questions,Mcqs,Objective Questions,Class Lecture Notes,Seminor topics,Lab Viva Pdf PPT Doc Book free download. (a) body centred cubic (d) pH value has nothing to do with basic solution (c) remain constant 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. Iron is Ans: c, 2. Ans: a, 118. Ans: c, 53. (c) vanadium (a) aluminium in steel results in excessive grain growth (d) surface decarburisation (e) none of the above. (d) Orthorhombic crystalline structure (a) manganese (b) body-centred cubic lattice (c) improves cutting ability and reduces hardenability (b) wear resistance is very good (d) 90% magnesium and 9% aluminium with some copper (c) hot hardness (c) hexagonal close packed Ans: c, 106. (b) 90% copper and 10% tin Ans: b, 122. (d) white carbon (c) nickel (a) substitutional solution (c) 910-1440°C (c) uniform in all directions Which of the following constituents of steels is softest and least strong (e) 1.5%. Ans: c, 124. (b) is also known as chilled cast iron and is obtained by cooling rapidly. Chilled cast iron has (a) nickel, chromium and manganese Ans: d, 32. (e) silver and gold. The basic constituents of Hastelloy are (c) high ductility The percentage of carbon in low carbon steel is The alloy used is Graphite is in the nodular or spheroidal form and is well dispersed throughout the material Ans: c, 108. (d) corrosion resistance (b) high in strength The crystal structure of gamma iron is (c) silicon (d) iron scrap and zinc (e) none of the above. (c) ferrite and austenite Ans: b, 17. Ans: a, 186. Babbit metal is a 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. (c) allotropic change Aluminium bronze contains (a) silicon and sulphur (c) 70 : 30 (b) manganese in steel induces hardness (c) lead (c) ductile (b) ability to recover its original form (d) lamellar layers of carbide distributed throughout the structure Ans: b, 52. (a) relieve stresses Steel made from phosphatic iron is (b) increase (b) 0.8% Rs khurmi objective book mechanical pdf free download: Hey everybody, in this article we are going to share with you the rs khurmi mechanical engineering pdf for all those students who are planning to make their career in the engineering field. (c) 60 : 40 Fluid Mechanics PART 1 . (e) aluminium. (b) refines grain size and produces less tendency to carburisation, improves corrosion and heat resistant properties (b) cementite and gamma iron Ans: a, 149. (b) F.C.C. Ans: c, 131. (a) tin, lead and small percentage of antimony (e) non-ferrous alloys. This the post provides estimate 1000++ MCQ Mechanical Engineering question which is helping all world students for their competitive exam’s preparations. (a) improves wear resistance, cutting ability and toughness You will find all the important Questions and Answers- MCQ of mechanical Engineering. Sulphur in steel Ans: d, 60. (d) gives ductility, toughness, tensile strength and anticorrosion properties (a) acts as deoxidiser (a) malleable iron (a) cast iron Ans: a, 141. (a) 63 to 67% nickel and 30% copper Ans: c, 171. Cemented carbide tools are not found to be suitable for cutting (a) 0.05% Ans: d, 139. An example of amorphous material is (e) at which crystals are destroyed on heating. (a) free form Ans: a, 126. (e) 90% copper and 10% zinc. Hardness of martensite is about (d) all of the above (b) refines grain size and produces less tendency to carburisation, improves corrosion and heat resistant properties Ans: d, 177. (a) chromium and nickel (d) all of the above (a) silver, copper, zinc (b) german silver Ans: a, 153. Perminvar alloy having constant permeability is an alloy of (d) is produced by small additions of magnesium (or creium) in the ladle. (d) 2% (e) none of the above. Ans: d, 175. Ans: a, 69. MECHANICAL ENGINEERING QUIZ. (b) combined form ME8594 Dynamics of Machines Download MCQ. Download Mechanical Engineering Fifth Semester Subjects MCQ (Multiple Choice Questions) Collection. Ans: e, 71. (c) method of fabrication Vanadium in high speed steels Weld decay is the phenomenon found with (c) adding carbon and nitrogen by heat treatment of steel to increase its surface hardness (e) chemical defect. which is easy to understand and improve your skill. (d) the points of discontinuity Ans: b, 7. (a) malleability Ans: a, 193. (c) thermal properties in all directions (c) heat treatment employed Technical Terms. Compressors, Gas Turbines and Jet Engines PART 1 . (d) fluidity (c) 1050°C (b) which after their destruction are recycled to produce fresh steel (e) 100% silver. Hydraulic Machines PART 1 Nuclear Power Plants PART 1. (c) mild steel A reversible change in the atomic structure of the steel with a corresponding change in the properties is known as Can u send me the mechanical qsns with answrs in pdf format please…….. (c) cycle chains (c) surface finish (b) in which stress remains constant on in-creasing load (a) 1% silver (c) 0.4% (b) its elastic limit close to the ultimate breaking strength (d) a complex cubic structure (c) magnin Ans: e, 165. Carbon in iron is an example of (e) above 1539°C. It contains well thought and well explained Mechanical Engineering objective quizzes. Depth of hardness of steel is increased by addition of (c) flakes The ultimate tensile strength of low carbon steel by working at a high strain rate will (b) magnesium (b) refined silver (d) grey iron Ans: c, 38. (c) alloy of tin, lead and cadmium (b) silicon, aluminium, titanium (b) in a haphazard way (b) carburised structure (e) 2000 VPN. Mechanical Engineering MCQ with detailed explanation for interview, entrance and competitive exams. Case hardening is done by sir,pls mail me all sub questions&answer in pdf..am job seacher ,i hope that you are helping me sir. (a) contains 1.7 to 3.5% carbon in free state and is obtained by the slow cooling of molten cast iron (c) neutral Tungsten in high speed steel provides The ultimate tensile strength and yield strength of most of the metals, when temperature falls from 0 to l00°C will Engineering Mechanics PART 1 . (d) precipitation (e) which have poor properties due to improper manufacturing. (b) 0.5% (a) hot working 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. (a) improves wear resistance, cuttinability and toughness (b) it brittle (b) nitriding of surface (e) cast iron. Ans: b, 120. engine. (b) silver, tin, nickel (b) copper and zinc (c) lead (b) nickel, copper and zinc Ans: b, 14. (b) is also known as chilled cast iron and is obtained by cooling rapidly. (e) phosphorous. (b) exists in several crystal forms at different temperatures (a) cold rolled steel (d) alpha iron, gamma from and delta iron Connecting rod is usually made of (b) low carbon steel, grey cast iron, wrought iron I is soft, tough and easily machinec metal (d) 0.7 to 0.9% Ans: b, 144. Ans: a, 8. German silver contains (e) grey cast iron, wrought iron, low carbon steel. Paramagnetic alpha iron changes to gamma iron at (e) 1.0 to 1.2%. Ans: c, 92. (c) around 0°C (a) are used where ease in machining is the criterion Bronze contains (d) tungsten and sulfur Which is the false statement about wrought iron. Ans: e, 58. (c) H.C.P. (e) none of the above. Ans: b, 86. Ans: e, 75. (d) 40 : 60 Which is false statement about tempering. (a) mild steel (b) refines grain size and produces less tendency to carburisation, improves corrosion and heat resistant proper¬ties (a) 80% or more iron White metal contains (e) 15-22. (e) none of the above. (c) flakes (d) ferrite and cementite Material Science Questions Answers MCQ – Mechanical Engineering 1) An example of amorphous material is a) brass b) glass c) silver d) lead 2)Which of the following steel making process is being adopted at Rourkela (in India) Steel Plant? Ans: b, 88. Material … (d) all of the above (a) modulus of elasticity is fairly low (c) decreases tensile strength and hardness (c) in circular motion Ans: d, 105. (d) malleable iron (e) nodular aggregates of graphite. Pick up the wrong statement and answers on Mechanical Engineering MCQ questions on Mechanical Engineering objectives questions with answer test pdf for interview preparations, freshers jobs and competitive exams. (b) improvement of corrosion resistance (c) vanadium, aluminium (e) mild steel. Ans: d, 101. (d) nitriding (e) permit further cold working. (b) 92.5% aluminium and, 4% copper, 2% nickel and 1.5% Mg (d) iron (d) the casting unsound (c) 1000 to 1100 VPN Ans: d, 107. (b) 90% copper and 10% tin (d) elinvar (e) inelasticity. (e) 0.7%. (c) one of the best known age and precipitation-hardening systems (b) provides high hot hardness Ans: c, 41. (e) uniform strength in all directions. Cupola produces following material Balls for ball bearings are made of (a) kind of stainless steel (e) none of the above. Isotropic materials are those which have the same (a) tensile strength (a) 3- 5 (d) tungsten, molybdenum, vanadium, chromium (e) increases the fluidity. Ans: b, 103. (a) electroplating Engineering Thermodynamics; Top 150 Thermodynamics MCQ; Strength of Material (SOM) Mechanical Engineering Design; Top 250 I.C. An important property of malleable cast iron in comparison to grey cast iron is the high (b) below 1% Ans: a, 45. (c) hexagonal close packed (e) none of the above. (c) tin and lead (e) none of the above is true. (b) perpendicular to lines of slag distribution Ans: b, 143. (b) equal to 7 (d) by crushing into thousands of pieces (e) none of the above. Ans: c, 178. Students can attempt remedial exam for the subjects only from regular semester and it is golden chance to clear backlogs in MCQ based exam. (b) graphite (e) atomic change. Ductile cast iron Structural steel contains following principal alloying elements (c) equal to 7 Ans: b, 29. Ans: a, 54. (b) heating and cooling rapidly The metallic structure of mild steel is (a) copper Mechanical Engineering MCQ questions and answers for an engineering student to practice, GATE exam, interview, competitive examination and entrance exam. (b) tin and lead Mechanical Engineering MCQ questions and answers especially for the Mechanical Engineer and who preparing for GATE Exam. (d) duralumin (c) stainless steel Ans: a, 145. (d) obtaining cyanide salts (d) is produced by small additions o magnesium (or cerium) in the ladle Graphite is in nodular or spheroida form and is well dispersed throughout the material (c) 85-92% copper and rest tin with little lead and nickel (d) has its atoms distributed in a random pattern It is almost unmachinable (a) 63 to 67% nickel and 30% copper (e) stainless steel. Pick up wrong statement about wrought iron (c) alloy of tin, lead and cadmium (d) tough Please send me the pdf of MCQ with ans of Metallurgy & Material engineering in my email:- safety_dme@yahoo.co.in or debumu78@gmail.com premkumar.k says: August 12, 2016 at 4:36 am Delta metal is an alloy of (d) 90% magnesium and 9% aluminium with some copper (a) white metal (e) none of the above. (c) working at lower temperature (a) stages at which allotropic forms change (d) 10-15 (b) 88% copper and 10% tin and rest zinc (a) along the lines of slag distribution (c) between 1400°C and 1539°C Ans: a, 23. (d) extensively used for making cutting tools Ans: a, 21. (a) face-centred cubic lattice Ans: b, 61. (c) is produced by annealing process. (d) 250 VPN (a) high tensile strength The ultimate strength of steel in tension in comparison to shear is in the ratio of (a) 1 : l (b) 2:1 (c) 3 : 2 (d) 2 : 3 (e) 1 : 2 Ans: c 2. (e) gun metal. (b) is also known as chilled cast iron and is obtained by cooling rapidly. (e) unpredictable behaviour. (a) refine grain structure Ans: d, 151. (c) It is very soft and ductile (d) nichrome (c) ability of hold protective coating (a) allotropic change Hardness of steel depends on I.C. (a) in a random manner (c) high carbon (b) reduce segregation in casting The collected materials will help the students to making practice for the upcoming online Examination 2020. INDUSTRIAL ENGINEERING Multiple choice Questions :-1. Ans: a, 13. Ans: c, 11. Process of austempering results in (b) 1500 VPN (a) nickel, copper and iron (e) none of the above. Ans: c, 184. 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