(b) maximum at center (c) proof resilience (d) eight times (a) same (a) ductility (d) 1 : 2.5 (e) none of the above. (b) tensile stress Sample Values for Young's Modulus. (a) 0.01 to 0.1 Read This, Top 10 commonly asked BPO Interview questions, 5 things you should never talk in any job interview, 2018 Best job interview tips for job seekers, 7 Tips to recruit the right candidates in 2018, 5 Important interview questions techies fumble most. (e) longitudinal stress and lateral strain. (d) fatigue resistance by over-stressing the metal by successively increasing loadings The stress induced in a body due to suddenly applied load compared to when it is applied gradually is (b) halved (d) 22 tonnes/cm2 (c) double riveted lap joints (b) half the weight of bar applied at lower end dL= increase in the length of the body in the direction of P. It is defined as the of ultimate stress to the working stress or permissible stress. The distance between the centres of the rivets in adjacent rows of zig-zag riveted joint is known as (c) ductility Proof resilience per material is known as The volume of the wire is in fact: Which of these factors doesn't affect the stress of a wire? (c) the central row The angle which an inclined plane makes with the horizontal when a body placed on it is about to move down is known as angle of (b) limit of proportionality (a) same So track your future as Biomedical engineer, Project Manager, Quality Manager, Material Engineer Environmental Engineer by looking into Strength of Materials job interview question and answers given. Ans: b, 126. (b) be safest (a) yield point (c) mean value Ans: e, 11. A riveted joint in which every rivet of a row is opposite to other rivet of the outer row, is known as Ans: b, 30. Mathematically stress is written as. TAP- Stress and Strain. (d) ultimate tensile stress (b), area of contact (a) resilience (e) principal stress. They also obey HOOKE'S LAW. Ans: d, 61. (c) greater than that necessary to stop it The relationship between modulus of elasticity, modulus of rigidity and Poisson’s ratio is given by. Ans: d, 62. (c) full equilibrium Define Stress And Strain? ANSWERS TO REVIEW QUESTIONS IMPORTANT NOTE In many cases the notes below are merely indications of the main points of a suitable answer. (d) unpredictable A particle inside a hollow sphere of radius r, having coefficient of friction -rr can rest upto height of Ans: a, 104. (c) shape of the surfaces (c) mechanical advantage is less than velocity ratio (d) lateral stress and lateral strain (d) malleability (a) bodies having relative motion (b) plastic point of the material (a) at distance — from the plane base 3r (d) steel (d) kinematic friction Write The Relationship Between Modulus Of Elasticity, Modulus Of Rigidity And Poisson’s Ratio? The total elongation produced in a bar of uniform section hanging vertically downwards due to its own weight is equal to that produced by a weight (c) single riveted single cover butt joint This constant is termed as modulus of elasticity. In actual machines Find the extension caused in the wire, by attaching a weight of 100N, if the material of the wire has the Young's modulus (E) of 200x1011Nm-2. (a) 0.1 to 0.2 The buckling load for a given material depends on (a) mm/mm (a) strain (d) stress at elastic limit The impact strength of a material is an index of its (b) r/A (c) mechanical advantage is less than velocity ratio (adsbygoogle = window.adsbygoogle || []).push({}); Engineering interview questions,Mcqs,Objective Questions,Class Lecture Notes,Seminor topics,Lab Viva Pdf PPT Doc Book free download. (d) any one of the above (d) W, P and F all on one side (c) pair of clinical tongs (b) the second row Ans: d, 45. 1. (c) diagonal pitch Question 7. Ans: d, 44. Ans: c, 71. (c) half (b) from zero at the center to maximum at the circumference The torsional rigidity of a shaft is expressed by the (c) half of the hoop stress State The Two Conditions Employed In Solving A Composite Bar Subjected To An Axial Load? f=P/A. A semi-circular disc rests on a horizontal surface with its top flat surface horizontal and circular portion touching down. Ans: c, 88. f1 and f2 = stress set up in the respective materials. (b) proof resilience Longitudinal strain: longitudinal strain is defined as the deformation of the body per unit length in the direction of the applied load. When we lower a body with the help of a crane, the body is first of all, just above the platform on which it is to be placed. (b) longitudinal stress and lateral stress (b) at the tip below the load (e) none of the above. (c) same (b) more Which is the false statement about true stress-strain method Ans: d, 10. The stress induced in a body, when subjected to two equal and opposite forces, which are acting tangentially across the resisting section as a result of which the body tends to shear off across the section is known as shear stress and corresponding strain is known as shear strain. (d) modulus of elasticity (d) one-fourth of weight of bar applied at lower end (e) 3/i/5. (c) breaking (d) strain (d) increase initially and then decrease (a) support is frictionless (e) toughness.. (You will be awarded marks for the quality of written communication in this part of the question. Topic 5. very useful, kindly send the pdf of all topics in mechanical engineering mcq. A beam is loaded as cantilever. (b) metal is twice as dense as water The C.G. (e) dynamic friction. (c) metal will float in water Ans: b, 33. (e) tensile strain remains constant. (d) It can be correlated with stress-strain values in other tests like torsion, impact, combined stress tests etc. A strain of 1x10-3 for a 1m long wire means an extension of 0.001m. (a) j-2 (c) 0.25 to 0.33 (e) maximum stress. The Young’s modulus of a wire is defined as the stress which will increase the length of wire compared to its original length (c) bearing (b) tensile stress Which of the following has no unit Top 4 tips to help you get hired as a receptionist, 5 Tips to Overcome Fumble During an Interview. (c) wattr (d) linear stress (b) compression Ans: a, 119. Top 10 facts why you need a cover letter? (e) none of the above. If the rivets in adjacent rows are staggered and the outermost row has only one rivet, the arrangement of the rivets is called (a) coplanar Ans: b, 80. A key is subjected to side pressure as well at shearing forces. Ans: a, 14. Question 13. (e) single riveted double cover butt joint. The value of modulus of elasticity for mild steel is of the order of Ans: c, 148. Ans: a, 90. How to Convert Your Internship into a Full Time Job? (e) equal to that necessary to stop it. Ans: b, 13. (c) different in both cases Stress and Strain Theory at a Glance (for IES, GATE, PSU) 1.1 Stress When a material is subjected to an external force, a resisting force is set up within the component. (b) change in length to original length (c) from maximum at the center to mini-mum at the cricumference Ans: d, 122. True stress-strain curve for materials is plotted between (a) tangent of angle between normal-reaction and the resultant of normal reaction and limiting friction (d) 60° This disc is to be pulled by a horizontal force applied at one edge and it always remains horizontal. Show that the feet of the freezer can cause permanent damage to the vinyl plastic floor covering. (a) size of rivet Home » Strength of Materials Mcqs » 300+ TOP STRENGTH of Materials Multiple Choice Questions and Answers, 1. Where f= stress. (b) butt joint (e) unpredictable. (e) something else. (c) 0.25 to 0.33 Ans: c, 50. Question 2. (b) It is more sensitive to changes in both metallurgical and mechanical conditions (c) the friction force acting when the body is just about to move Ans: c, 97. (b) hard (d) all of the above Topic 6. (d) diametral pitch Ans: b, Pls send pdf files on solved problems on strength of materials, sir i sincerely request you, please send these questions and answers to gmail:rajaseshu.talari@gmail.com, Very benifitial (c) hardness by surface treatment (b) copper (d) average value in center These pressures are called Stress, strain, Young’s modulus – problems and solutions. (b) ductility A cylindrical section having no joint is known as GCSE Physics P1, P2, P3. (e) half. (d) watt hours (c) lateral stress and longitudinal stress (a) fluids in motion Ans: c, 149. The stress at which extension of the material takes place more quickly as compared to the increase in load is called Ans: d, 28. (d) double all the dimensions In the tensile test, the phenomenon of slow extension of the material, i. e. stress increasing with the time at a constant load is called The only factor on the list that does not affect force or area is original length, B. Topic 3. Unit of stress: stress is represented in N/m2. In a tensile test, near the elastic limit zone, the Ans: a, 72. A stress-strain graph is plotted for a sample of wire with cross sectional area of 2.0 x 10-6m2. The stress induced in a body, when subjected to two equal and opposite pushes, as a result of which there is an decrease in length, is known as compressive stress. Ans: d, 74. (d) anywhere (b) ratio of limiting friction and normal reaction (d) shock proof (b) sliding friction (e) 60%. The force acting along the circumference will cause stress in the walls in a direction normal to the longitudinal axis of cylinder; this stress is called In riveted boiler joints, all stresses, shearing, bearing and tensile are based on the (d) become one-fourth Ans: b, 20. (b) 30° Ans: d. 10. (b) support can take any amount of reaction (b) load/instantaneous cross-sectional area original area and log. (b) less Ans: d, 95. How Can Freshers Keep Their Job Search Going? (d) 200 MN/m2 (b) original cross-sectional area