Strength of Material (Part-3) (General Engineering) (SSC JE)

Total Questions: 50

21. In a beam, at a place where the shear force is maximum, the bending moment will be [RSMSSB JE (E&M) Degree - 26/12/2020]

Correct Answer: (d) None of the above
Solution:Shear force–The shear force at the crosssection of a beam may be defined as the algebraic sum of all the forces on either side of the section.

Bending moment–The bending moment at the crosssection of a beam may be defined as the algebraic sum of all the moment of the moment of the forces on either side of the section.

Simply supported beam of span L carrying a concentrated load W at mid span–

22. If the Young's modulus and Poisson's ratio of the container material are 100 GPa and 0.3, respectively, the axial strain in the cylinder wall at mid-depth is [BPSC AE (GEN. ENGG.)-29.03.2019 ]

Correct Answer: (a) 2 × 10⁻⁵
Solution:


23. Two bars of different materials and same size are subjected to the same tensile force. If the bars have unit elongation in the ratio of 2 : 5, then the ratio of modulus of elasticity of the two materials will be [BPSC AE (GEN. ENGG.)-29.03.2019 ]

Correct Answer: (b) 5 : 2
Solution:

24. The ratio of bulk modulus to Young's modulus for a Poisson's ratio of 0.25 will be [BPSC AE (GEN. ENGG.)-29.03.2019 ]

Correct Answer: (b) 2/3
Solution:

25. The bending moment of a cantilever beam of length l and carrying a uniformly distributed load of w per unit length is........at the fixed end. [BPSC AE (GEN. ENGG.)-29.03.2019]

Correct Answer: (d) wl² /2
Solution:

26. Identity the correct stress distribution over the depth of the section shown here. [JSSC JE (GEN. ENGG.) 04.11.2022 ]


Correct Answer: (d)
Solution:


27. Calculate the maximum bending moment of a simply supported beam of length 8 m carrying a UDL of 9 N/m over the entire span. [JSSC JE (GEN. ENGG.) 04.11.2022 ]

Correct Answer: (b) 72 N-m
Solution:

28. The maximum bending moment on a simply supported beam loaded with a UDL w for its entire length L is : [JSSC JE (GEN. ENGG.)- 31.10.2022 ]

Correct Answer: (a) wL² /8
Solution:

Different types of beam for bending moment and shear force

29. A Cantilever beam of rectangular cross-section is subjected to a point load at its free end. If width and depth of the beam section are doubled, then the deflection at free end of the beam will be reduced to [BPSC AE (GEN. ENGG.) 16.09.2018 ]

Correct Answer: (a) 6.25%
Solution:



30. The ratio between the stress produced by gradually applied and suddenly applied load is: [RRB JE (Chennai) 14.12.2014 ]

Correct Answer: (c) 1/2
Solution: