On This Page
This set of Strength of Materials Multiple Choice Questions & Answers (MCQs) focuses on Strength Of Materials Set 17
Q1 | The springs in cars are used to store strain energy.
- Correct
- Incorrect
Q2 | Factor of safety is defined as the ratio of
- ultimate stress to working stress
- working stress to ultimate stress
- breaking stress to ultimate stress
- ultimate stress to breaking stress
Q3 | When a beam is subjected to a bending moment, the strain in a layer is
- equal to
- directly proportional to
- inversely proportional to
- independent of
Q4 | In the above question, the normal stress on an oblique section will be maximum, when ? is equal to
- 0?
- 30?
- 45?
- 90?
Q5 | The Rankine's constant for a mild steel column with both ends hinged is
- 1 / 750
- 1 / 1600
- 1 ? 7500
- 1 ? 9000
Q6 | A tensile test is performed on a mild steel round bar. Its diameter after fracture will
- remain same
- increase
- decrease
- depend upon rate of loading
Q7 | The hoop stress in a thick cylindrical shell is maximum at the inner radius.
- True
- False
Q8 | For riveting, the size of hole drilled in plates is
- equal to
- less than
- greater than
Q9 | When a shaft is subjected to a twisting moment, every cross-section of the shaft will be under
- tensile stress
- compressive stress
- shear stress
- bending stress
Q10 | The line of intersection of the neutral layer with any normal cross-section of the beam is called neutral axis.
- True
- False
Q11 | A reinforced cement concrete beam is considered to be made of
- homogeneous material
- hetrogeneous material
- composite material
- isotropic material
Q12 | The strength of the shaft is judged by the torque transmitted by the shaft.
- Yes
- No
Q13 | In a leaf spring the length of all the leaves are equal.
- True
- False
Q14 | The ductility of the material
- increases
- decreases
- remains same
Q15 | The ratio of linear stress to the linear strain is called
- modulus of rigidity
- modulus of elasticity
- bulk modulus
- Poisson's ratio
Q16 | The load required to produce a unit deflection in a spring is called
- flexural rigidity
- torsional rigidity
- spring stiffness
- Young's modulus
Q17 | When a thin cylindrical shell is subjected to an internal pressure, there will be
- a decrease in diameter and length of the shell
- an increase in diameter and decrease in length of the shell
- a decrease in diameter and increase in length of the shell
- an increase in diameter and length of the shell
Q18 | The design of thin cylindrical shells is based on
- hoop stress
- longitudinal stress
- arithmetic mean of the hoop and the longitudinal stress
- geometric mean of the hoop and longitudinal stress
Q19 | A column of length (l) with both ends fixed may be considered as equivalent to a column of length
- l / 8
- l / 4
- l / 2
- l
Q20 | Resilience is the
- energy stored in a body when strained within elastic limits
- energy stored in a body when strained upto the breaking of the specimen
- maximum strain energy which can be stored in a body
- none of the above
Q21 | Two closely-coiled helical springs 'A' and 'B' of the same material, same number of turns and made from same wire are subjected to an axial load W. The mean diameter of spring 'A' is double the mean diameter of spring 'B'. The ratio of deflections in spring 'B' to spring 'A' will be
- 1 ? 8
- 1 ? 4
- 2
- 4
Q22 | The neutral axis of the symmetrical beam does not pass through the centroid of the beam.
- Agree
- Disagree
Q23 | The maximum bending moment of a cantilever beam of length l and carrying a uniformly distributed load of w per unit length lies at the middle of its length.
- True
- False
Q24 | A body is subjected to a direct tensile stress (?) in one plane. The shear stress is maximum at a section inclined at
- 45? and 90?
- 45? to 135?
- 60? and 150?
- 30? and 135?
Q25 | A localised compressive stress at the area of contact between two members is known as
- tensile stress
- bending stress
- crushing stress
- shear stress