The locus of the moment of inertia about inclined axes to the principal axis, is______________?
(A) Straight line
(B) Parabola
(C) Circle
(D) Ellipse
Y are the bending moment, moment of inertia, radius of curvature, modulus of If M, I, R, E, F, and elasticity stress and the depth of the neutral axis at section, then________________?
(A) M/I = R/E = F/Y
(B) I/M = R/E = F/Y
(C) M/I = E/R = E/Y
(D) M/I = E/R = Y/F
Total strain energy theory for the failure of a material at elastic limit, is known_________________?
(A) Guest’s or Trecas’ theory
(B) St. Venant’s theory
(C) Rankine’s theory
(D) Haig’s theory
A steel rod 1 metre long having square cross section is pulled under a tensile load of 8 tonnes. The extension in the rod was 1 mm only. If Esteel = 2 × 106 kg/cm2, the side of the rod, is_________________?
(A) 1 cm
(B) 1.5 cm
(C) 2 cm
(D) 2.5 cm
A steel bar 5 m × 50 mm is loaded with 250,000 N. If the modulus of elasticity of the material is 0.2 MN/mm2 and Poisson’s ratio is 0.25, the change in the volume of the bar is_________________?
(A) 1.125 cm3
(B) 2.125 cm3
(C) 3.125 cm3
(D) 4.125 cm2
In plastic analysis, the shape factor for a triangular section, is_________________?
(A) 1.5
(B) 1.34
(C) 2.34
(D) 2.5
0. At its elastic limit, the following statement is true, 0/E__________________?
(A) Strain is equal to
(B) Maximum shear stress = /2
(C) Strain energy = 0 0²/2E × volume
(D) All the above
A cantilever of length 2 cm and depth 10 cm tapers in plan from a width 24 cm to zero at its free end. If the modulus of elasticity of the material is 0.2 × 106 N/mm2, the deflection of the free end, is________________?
(A) 2 mm
(B) 3 mm
(C) 4 mm
(D) 5 mm
A shaft is subjected to bending moment M and a torque T simultaneously. The ratio of the maximum bending stress to maximum shear stress developed in the shaft, is____________________?
(A) M/T
(B) T/M
(C) 2M/ T
(D) 2T/M
A square column carries a load P at the centroid of one of the quarters of the square. If a is the side of the main square, the combined bending stress will be________________?
(A) p/a²
(B) 2p/a²
(C) 3p/a²
(D) 4p/a²