At any point of a beam, the section modulus may be obtained by dividing the moment of inertia of the section by Depth of the neutral axis Maximum compressive stress at the section Depth of the section Maximum tensile stress at the section TRUE ANSWER : ? YOUR ANSWER : ?
For beams breadth is constant, Depth d 1/M Depth d M Depth d 3 Depth d TRUE ANSWER : ? YOUR ANSWER : ?
The yield moment of a cross section is defined as the moment that will just produce the yield stress in The fibre everywhere The outer most fibre of the section The neutral fibre of the section The inner most fibre of the section TRUE ANSWER : ? YOUR ANSWER : ?
The maximum magnitude of shear stress due to shear force F on a rectangular section of area A at the neutral axis, is F/2A F/A 2F/3A 3F/2A TRUE ANSWER : ? YOUR ANSWER : ?
The ratio of maximum shear stress to average shear stress of a circular beam, is 4/3 2/3 4/7 3/2 TRUE ANSWER : ? YOUR ANSWER : ?
A close coil helical spring of mean diameter D consists of n coils of diameter d. If it carries an axial load W, the energy stored in the spring, is 4W²D3n/d4N 4W²D3n²/d4N 4WD²n/d4N 4W²Dn/d4N TRUE ANSWER : ? YOUR ANSWER : ?
A steel rod of sectional area 250 sq. mm connects two parallel walls 5 m apart. The nuts at the ends were tightened when the rod was heated to 100°C. If steel = 0.000012/C°, Esteel = 0.2 MN/mm², the tensile force developed at a temperature of 50°C, is 80 N/mm² 120 N/mm² 100 N/mm 2 150 N/mm² TRUE ANSWER : ? YOUR ANSWER : ?
A composite beam is composed of two equal strips one of brass and other of steel. If the temperature is raised All of these Brass experiences compressive force Composite beam gets subjected to a couple Steel experiences tensile force TRUE ANSWER : ? YOUR ANSWER : ?
A load of 1960 N is raised at the end of a steel wire. The minimum diameter of the wire so that stress in the wire does not exceed 100 N/mm² is: 4.5 mm 4.0 mm 5.5 mm 5.0 mm TRUE ANSWER : ? YOUR ANSWER : ?
At yield point of a test piece, the material Obeys Hooke’s law Regains its original shape on removal of the load Undergoes plastic deformation Behaves in an elastic manner TRUE ANSWER : ? YOUR ANSWER : ?