A) Tensile stressB) Compressive stressC) Shear stressD) No stress Explanation: As per theory of thermal stresses, when a body is restricted from free expansion or contraction, it develops internal stresses when subjected to change in temperature. If a constrained part is heated, it tends to expand. But restriction to movement causes development of compressive stresses…
A) 2 points , at L/4 and 3L/4 from left supportB) 1 point , at L/2 from left supportC) 3 points , at L/3, L/2 and 2L/3 from left supportD) No point of contra flexure Reference:As per theory of structural analysis, in a fixed beam with a central point load, there are two points of…
A) Mild steelB) Cast ironC) AluminumD) Copper Explanation: As per IS 1608, when a ductile material like mild steel is subjected to tensile test, it undergoes significant plastic deformation before failure. This causes necking at the fractured section, where the diameter reduces substantially. However, brittle materials like cast iron and aluminum do not undergo plastic…
A) 1.33 N/mm2B) 2.67 N/mm2C) 4 N/mm2D) 5.33 N/mm2 Reference:As per IS 456:2000, the shear stress formula is:τ = VQ/IbWhere,τ – Shear stressV – Shear forceQ – First moment of area above or below the neutral axisI – Moment of inertiab – Width of beam For a rectangular section, I = bd3/12Q = A x…