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A 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 AnswerIn stress strain curve of mild steel Ultimate Tensile Stress is1 AnswerIn the engineering stress-strain curve for mild steel, the Ultimate Tensile Strength (UTS) refers to1 AnswerA body starts yielding when it is subjected to a stress state with principal stresses of 250 MPa, 50 MPa and −50 MPa. What is the yield strength of the material, in MPa, if Tresca yield criterion is obeyed? (-Gate metallurgical engineering 2014)1 AnswerA shaft with a circular cross-section is subjected to pure twisting moment. The ratio of the maximum shear stress to the largest principal stress isGate-20161 AnswerWhich one of following is NOT correct? (Gate mechanical engineering 2014)1 AnswerWhich one of the following plots relating shear stress with strain rate represents Newtonian behaviour of a fluid? (-Gate metallurgical engineering 2014)1 AnswerA steel member ‘M’ has reversal of stress due to live loads, whereas another member ‘N’ has reversal of stress due to wind load. As per IS 800: 2007, the maximum slenderness ratio permitted is: - gate civil 20171 AnswerA thin cylindrical pressure vessel with closed-ends is subjected to internal pressure. The ratio of circumferential (hoop) stress to the longitudinal stress is Gate-20161 AnswerThe respective units for dislocation density and stress intensity factor are: (-Gate metallurgical engineering 2014)1 AnswerAs compared to the engineering stress-engineering st rain curve, the true stress-true strain curve for a given material, GATE- Metallurgical Engineering- 20131 AnswerIn a steel plate with bolted connections, the rupture of the net section is a mode of failure under -Civil Engineering-gate-20121 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 AnswerA motor is driving a solid circular steel shaft transmits 40kW of power at 500 rpm. If the diameter of the shaft is 40 mm, The maximum shear stress in the shaft is ____ MPa. 1 AnswerAn ideal Brayton cycle, operating between the pressure limits of 1 bar and 6 bar -gate-mechanical-20111 AnswerWhat is the theoretical requirement of air (in m3 at STP) for the complete combustion of 100 m3 (at STP) of a fuel consisting of pure CH4? Assume that air contains 21 vol.% of oxygen. _____. (-Gate metallurgical engineering 2014)1 AnswerIf a small concrete cube is submerged deep in still water in such a way that the pressure exerted on all faces of the cube is p, then the maximum shear stress developed inside the cube is -Civil Engineering-gate-20121 AnswerA composite circular shaft is comprised of a steel core surrounded by an aluminum annulus, perfectly bonded to each other as shown in the fi gure. If it subjected to a pure torque, which one of the following statements is TRUE? GATE-1 AnswerStress path equation for tri-axial test upon application of deviatoric stress is, q root10 3 root 0.5 p . The respective values of cohesion, c (in kPa) and angle of internal friction, fiy are: - gate civil 2017 1 AnswerA simply supported beam AB of span, L = 24 m is subjected to two wheel loads acting at a distance, d = 5 m apart as shown in the figure below. Each wheel transmits a load, P = 3 kN and may occupy any position along the beam. If the beam is an I-section having section modulus, S = 16.2 cm 3 , the maximum bending stress (in GPa) due to the wheel loads is _______________________. - gate civil 2017 1 Answer