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This set of Strength of Materials Multiple Choice Questions & Answers (MCQs) focuses on Strength Of Materials Set 5
Q1 | In a tensile test of specimen,the ratio of maximum load to the original cross sectional area of test piece is called
- yield stress
- ultimate stress
- safe stress
- breaking stress
Q2 | In a body, thermal stress is one which arises because of the existence of
- latent heat
- temperature gradient
- total heat
- specific heat
Q3 | A localized compressive stress at the area of contact between the two surfaces is called as
- tensile stress
- bending stress
- bearing stress
- shear stress
Q4 | The ratio between change in volume to original volume of body is called………… strain.
- tensile
- compressive
- shear
- volumetric
Q5 | There is always a limiting value of load up to which the strain totally disappears on the removal of load; the stress corresponding to this load is called…………
- elastic limit
- unit stress
- yield stress
- none of the above
Q6 | Robert Hooke discovered experimentally that within elastic limit
- stress = strain
- stress x strain = constant
- stress/strain = constant
- none of the above
Q7 | When a tensile or compressive force (P) acts on a body, the change in its length is given by
- pl/ae
- ae/pl
- pe/al
- pa/le
Q8 | Modulus of elasticity is defined as the ratio of
- shear stress to shear strain
- linear stress to linear strain
- linear strain to lateral strain
- lateral strain to linear strain
Q9 | The ratio of linear strain to lateral strain is known as
- modulus of elasticity
- modulus of rigidity
- poisson's ratio
- none of above
Q10 | The ratio of lateral strain to linear strain is known as
- modulus of elasticity
- modulus of rigidity
- poisson's ratio
- elastic limit
Q11 | The relation between E (modulus of elasticity) and C (modulus of rigidity) is given by
- e = c (1+µ)
- e =2 c (1+µ)
- e = c (1+2µ)
- e =2 c (1+2µ)
Q12 | The relation between E (modulus of elasticity) and K (bulk modulus of elasticity) is given by
- e=k(1-2µ)
- e=2k(1-2µ)
- e=3k(1-2µ)
- e=4k(1-2µ)
Q13 | Relation between E, K and C is given by
- e=9kc/(3k+c)
- e=(3k+c)/6kc
- e=6kc/(k+3c)
- e=3kc/(3k+c)
Q14 | Which of the following statement is incorrect?
- stress is directly proportional to strain within elastic limit
- the stress is force per unit area.
- hooke's law holds good up to the breaking point
- the ratio of linear stress to linear strain is called young's modulus.
Q15 | When a bar is subjected to a change of temperature and its deformation is prevented, which of the following stress is induced?
- thermal stress
- shear stress
- tensile stress
- compressive stress
Q16 | Temperature stress developed in a bar depends on which of the following?
- coefficient of linear expansion
- change of temperature
- young's modulus
- all of above
Q17 | The temperature strain in a bar is ……………..proportional to the change intemperature.
- directly
- indirectly
- either of above
- none of the above
Q18 | …………….Strain is the deformation of the bar per unit length in thedirection of force.
- volumetric
- shear
- lateral
- linear
Q19 | Strain in a direction at right angles to the direction of applied force is known as
- lateral strain
- shear strain
- volumetric strain
- none of the above
Q20 | A localized compressive stress at the area of contact between two membersis known as ……………..stress.
- shear
- crushing
- bending
- tensile
Q21 | A material with identical properties in all directions is known as
- homogeneous
- isotropic
- elastic
- none of the above
Q22 | The units of stress in the SI system are
- kg/m2
- n/m2
- kg/mm2
- none of the above
Q23 | In a lap riveted joint the rivets are mainly subjected to --------------stress
- shear
- tensile
- bending
- compressive
Q24 | The resistance to deformation of a body per unit area is known as
- stress
- strain
- modulus of elasticity
- modulus of rigidity
Q25 | stress developed due to external force in an elastic material
- depends on elastic constants
- does not depend on elastic constants
- depends partially on elastic constants
- none of the above