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

Total Questions: 50

41. Curve having ordinate of some particular function due to unit load acting at that point is known as [JSSC JE (GEN. ENGG)-2017 ]

Correct Answer: (a) influence line
Solution:

Influence lines–An influence line is a curve, the ordinates to which at any point equals the value of same particular function due to unit load acting at that
point.

42. According to maximum shear stress criterion, yielding in material occurs when [BPSC AE (GEN. ENGG.) 16.09.2018 ]

Correct Answer: (b) maximum shear stress = 0.5 yield stress
Solution:

43. For a symmetrical I section, the maximum shear stress occurs at: [JSSC JE (GEN. ENGG.)- 31.10.2022 ]

Correct Answer: (c) centroid
Solution:


44. If a material has identical properties in all directions, it is said to be– [RRB JE 26.08.2015 (Shift-I) / RRB S.S.E. 02.09.2015 (Shift-II) / RRB S.S.E. 02.09.2015 (Shift-III) ]

Correct Answer: (b) Isotropic
Solution:

Isotropic–A material's properties are the same in all direction. eg:- Metals and glass Anisotropic–A material's properties are affected by its orientation.
eg:- Wood

45. Bending compressive and tensile stresses respectively are calculated based on [RRB JE 26.08.2015 (Shift-II) ]

Correct Answer: (b) Gross area and net area
Solution:

46. If the modulus of elasticity is zero, the material is said to be– [RRB JE 26.08.2015 (Shift-II) ]

Correct Answer: (d) Plastic
Solution:

If the modulus of elasticity is zero (E = 0) then slope of the stress-strain curve is straight line.
• It means at constant stress-strain keeps increasing which is the characteristic property of perfectly plastic material.

47. The unit of elastic modulus is the same as those of [RRB JE 27.08.2015 (Shift-I) ]

Correct Answer: (a) Stress, shear modulus and pressure
Solution:

48. The point where the bending moment is zero is called as [RRB S.S.E. (Secunderabad) 02.09.2015 (Shift-I) / APPSC AE PRE.-15.05.2022 ]

Correct Answer: (a) Point of contraflexure
Solution:

The point where the bending moment is zero is called as point of contraflexure.
e.g

49. Cup and cone type fracture occurs in the case of- [RRB JE 28.08.2015 (Shift-III) ]

Correct Answer: (b) Round specimen of ductile metals
Solution:

• Cup and cone type of fracture occurs in the case of round specimen of ductile metals.
• Failure plane is at 45º. Shear strength < Tensile strength < Compressive
strength.

50. A prismatic beam has uniform : [RRB JE 28.08.2015 (Shift-II) ]

Correct Answer: (d) Cross–section
Solution:

A prismatic beam is a structural element that has a uniform cross-section along its length.