cross sections of bronze and copper bars of equal lengt b c are their Ab and Ac are the respective stresses due to load P. If Pb and Pc are the loads shared by them, (where Eb and Ec are their modulii)____________________?

A. B c = eb /ec
B. P = pb + pc
C. P = ab b + ac b
D. All the above

H V are the algebraic sums of the forces resolved horizontally and vertically respectively, M is the algebraic sum of the moments of forces about any point, for the equilibrium of the body acted upon____________________?

A. H = 0
B. V = 0
C. M = 0
D. All the above

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_________________?

A. 80 n/mm2
B. 100 n/mm 2
C. 120 n/mm2
D. 150 n/mm2

P = /4L² is the equation of Euler’s crippling load, if__________________?

A. Both the ends are fixed
B. Both the ends are hinged
C. One end is fixed and other end is free
D. One end is fixed and other end is hinged

The S.F. diagram of a loaded beam shown in the given figure is that of________________?

A. A simply supported beam with isolated central load
B. A simply supported beam with uniformly distributed load
C. A cantilever with an isolated load at the free end
D. A cantilever with a uniformly distributed load

Shear strain energy theory for the failure of a material at elastic limit, is due to_________________?

A. Rankine
B. Guest or trecas
C. St. venant
D. Von mises

Beams composed of more than one material, rigidly connected together so as to behave as one piece, are known as________________?

A. Compound beams
B. Indeterminate beams
C. Determinate beams
D. Composite beams

In a shaft, the shear stress is not directly proportional to_________________?

A. Radius of the shaft
B. Angle of twist
C. Length of the shaft
D. Modulus of rigidity

The maximum deflection of a simply supported beam of span L, carrying an isolated load at the centre of the span; flexural rigidity being EI, is______________?

A. Wl3/3el
B. Wl3/8el
C. Wl3/24el
D. Wl3/48el

A steel bar 20 mm in diameter simply-supported at its ends over a total span of 40 cm carries a load at its centre. If the maximum stress induced in the bar is limited to N/mm2, the bending strain energy stored in the bar, is___________________?

A. 411 n mm
B. 511 n mm=
C. 611 n mm
D. 711 n mm