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In the engineering stress-strain curve for mild steel, the Ultimate Tensile Strength (UTS) refers to1 AnswerIn stress strain curve of mild steel Ultimate Tensile Stress is1 AnswerA spherical pressure vessel (made of mild steel) of internal diameter 500 mm and thickness 10 mm is subjected to an internal gauge pressure of 4000 kPa. If the yield stress of mild steel is 200 MPa, the factor of safety (up to one decimal place) is ______0 AnswerConsider the stress-strain curve for an ideal elastic-plastic strain hardening metal as shown in the figure. The metal was loaded in uniaxial tension starting from O. Upon loading, the stress-strain curve passes through initial yield point at P, and then strain hardens to point Q, where the loading was stopped. From point Q, the specimen was unloaded to point R, where the stress is zero. If the same specimen is reloaded in tension from point R, the value of stress at which the material yields again is _________ MPa.0 AnswerA bimetallic cylindrical bar of cross sectional area 1 m2 is made by bonding Steel and Aluminium as shown in the figure. To maintain tensile axial strain of magnitude 6 10 in Steel bar and compressive axial strain of magnitude 6 10 in Aluminum bar, the magnitude of the required force P (in kN) along the indicated direction is (Gate 2018 Mechanical engineering)0 AnswerAs compared to the engineering stress-engineering st rain curve, the true stress-true strain curve for a given material, GATE- Metallurgical Engineering- 20131 AnswerThe S-N curve for a steel is shown below. If the stress ratio, (σmin/σmax) = −0.8, the maximum stress (in MPa, rounded off to the nearest integer) that the steel can withstand for infinite fatigue life is ____________.0 AnswerThe true stress (σ) - true strain ( ) diagram of a strain hardening material is shown in figure. First, there is loading up to point A, i.e., up to stress of 500 MPa and strain of 0.5. (Gate 2018 Mechanical engineering)0 AnswerA plane-strain compression (forging) of a block is shown in the figure. The strain in the z-direction is zero. The yield strength (Sy) in uniaxial tension/compression of the material of the block is 300 MPa and it follows the Tresca (maximum shear stress) criterion. Assume that the entire block has started yielding. At a point where 40 MPa (compressive) and 0, x xy the stress component y is0 AnswerA steel rod is fixed at one end and free at the other end. The coefficient of thermal expansion of the steel is α, and modulus of elasticity is E. If the temperature of the rod is increased by Δ then the stress and strain developed in the rod are respectively1 AnswerConsider the singly reinforced beam shown in the figure below:At cross-section XX, which of the following statements is TRUE at the limit state? - gate civil 2017 1 AnswerThe critical bending compressive stress in the extreme fibre of a structural steel section is 1000 MPa. It is given that the yield strength of the steel is 250 MPa, width of flange is 250 mm and thickness of flange is 15 mm. As per the provisions of IS:800-2007, the non-dimensional slenderness ratio of the steel cross-section is0 AnswerTrue stress - true strain behavior of a metal is given by the flow curve equation o=1750e^0.37 , where o is in MPa. The true stress at necking (in MPa, rounded off to the nearest integer) is ___________________.0 AnswerA single crystal of aluminium is subjected to 10 MPa tensile stress along the  crystallographic direction. The resolved shear stress on the (111̅ )  slip system is ______ (in MPa to two decimal places)0 AnswerL ength, width and thickness of a plate are 400 mm, 400 mm and 30 mm, respectively. For the material of the plate, Young’s modulus of elasticity is 70 GPa, yield stress is 80 MPa and Poisson’s ratio is 0.33. When the plate is subjected to a longitudinal tensile stress of 70 MPa, the increase in the volume (in mm3) of the plate is ______0 AnswerA steel rod was subjected to a fluctuating stress cycle that varied between a maximum of 400 MPa in tension to a minimum of 300 MPa in compression. What is the stress amplitude, in MPa?______. (-Gate metallurgical engineering 2014)1 AnswerA metallic rod of diameter 0 d is subjected to the tensile test. The engineering stress and the true stress at fracture are 800 MPa and 900 MPa, respectively. The ratio of the rod diameter at fracture f d to the initial diameter 0 d is ______ (round off to 2 decimal places)0 AnswerW hich of the following materials are protected by passivation (i.e., formation of a thin adherent film on the surface) from corrosion? P. Aluminium alloys Q. Mild steel R. Stainless steel S. Silver1 AnswerA circular steel bar of diameter 10 mm is bent into the shape as shown in figure, and lies in x-z plane. A horizontal force P is applied along the positive z-direction as shown. The yield strength of the steel is 200 MPa. Neglecting the effect of transverse shear, the load P (in Newton) required to initiate yielding as per maximum shear stress theory of failure is............[up to two decimal places]0 AnswerA 100 mm long cylindrical workpiece of diameter 50 mm is reduced to 25 mm diameter using extrusion process. The flow curve for the metal has strength coefficient as K = 750 MPa and the strain hardening co-efficient is 0.15. Assuming no friction and no redundant work, the required ram pressure (in MPa) is closest to0 Answer
CE2257 STRENGTH OF MATERIALS LABORATORYVTU SYLLABUS 2010 STRENGTH OF MATERIALS (COMMON TO CV/TR/EV/CTM) [10CV33] Engineering.CE2201 MECHANICS OF SOLIDS10me34 Mechanics of materialsCE 2035 ROCK ENGINEERINGCE2252 STRENGTH OF MATERIALSCE 2404 PRESTRESSED CONCRETE STRUCTURECE2251 SOIL MECHANICSCE2049 SMART STRUCTURES AND SMART MATERIALS | ANNA UNIVERSITY BE CIVIL ENGINEERING 8th SEMESTER SYLLABUS 2008 REGULATIONCE2352 DESIGN OF STEEL STRUCTURES