Strength of Materials objective questions with answers part3

Q1. Efficiency of a riveted joint is the ratio of its strength (max. load it can resist without failure) to the strength of the unpunched plate in
(A) tension
(B) compression
(C) bearing
(D) None of these

Q2. The distance between the centres of the rivets in adjacent rows of zig-zag riveted joint is known as
(A) pitch
(B) back pitch
(C) diagonal pitch
(D) None of these

Q3. In riveted boiler joints, all stresses, shearing, bearing and tensile are based on the
(A) size of rivet
(B) size of the drilled or reamed hole
(C) average of size of rivet and hole
(D) average of size of hole

Q4. In a prismatic member made of two materials so joined that they deform equally under axial stress, the unit stresses in two materials are
(A) equal
(B) proportional to their respective moduli of elasticity
(C) inversely proportional to their moduli of elasticity
(D) inversely proportional to square of their moduli of elasticity

Q5. The ratio of elongation in a prismatic bar due to its own weight (W) as compared to another similar bar carrying an additional weight (W) will be
(A) 01:02:00
(B) 01:03:00
(C) 01:04:00
(D) 01:08:00

Q6. A non-yielding support implies that the
(A) support is frictionless
(B) support can take any amount of reaction
(C) support holds member firmly
(D) slope of the beam at the support is zero

Q7. A beam is loaded as cantilever. If the load at the end is increased, the failure will occur
(A) in the middle
(B) at the tip below the load
(C) at the support
(D) at the fixed end

Q8. A material capable of absorbing large amount of energy before fracture is known as
(A) ductility
(B) toughness
(C) resilience
(D) None of these

Q9. The strain energy stored in a body due to suddenly applied load compared to when it is applied gradually is
(A) same
(B) twice
(C) four times
(D) eight times

Q10. The stress induced in a body due to suddenly applied load compared to when it is applied gradually is
(A) same
(B) half
(C) two times
(D) four times

Q11. Proof resilience per material is known as
(A) resilience
(B) proof resilience
(C) modulus of resilience
(D) modulus of resilience

Q12. The total strain energy stored in a body is termed as
(A) resilience
(B) proof resilience
(C) modulus of resilience
(D) None of these

Q13. The maximum strain energy that can be stored in a body is known as
(A) impact energy
(B) resilience
(C) proof resilience
(D) None of these

Q14. Resilience of a material is considered when it is subjected to
(A) frequent heat treatment
(B) fatigue
(C) creep
(D) stress at elastic limit

Q15. The energy absorbed in a body, when it is strained within the elastic limits, is known as
(A) strain energy
(B) resilience
(C) proof resilience
(D) stress at elastic limit

Q16. When it is indicated that a member is elastic, it means that when force is applied, it will
(A) not deform
(B) be safest
(C) stretch
(D) None of these

Q17. Flow stress corresponds to
(A) fluids in motion
(B) breaking point
(C) plastic deformation of solids
(D) None of these

Q18. The stress at which extension of the material takes place more quickly as compared to the increase in load is called
(A) elastic point of the material
(B) plastic point of the material
(C) breaking point of the material
(D) yielding point of the material

Q19. The ratio of direct stress to volumetric strain in case of a body subjected to three mutually perpendicular stresses of equal intensity, is equal to
(A) Young’s modulus
(B) bulk modulus
(C) modulus of rigidity
(D) None of these

Q20. The ratio of lateral strain to the linear strain within elastic limit is known as
(A) bulk modulus
(B) modulus of rigidity
(C) modulus of elasticity
(D) Poisson’s ratio