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This set of Strength of Materials Multiple Choice Questions & Answers (MCQs) focuses on Strength Of Materials Set 13
Q1 | A closely-coiled helical spring is cut into two halves. The stiffness of the resulting spring will be
- same
- double
- half
- one-fourth
Q2 | The deformation of a bar under its own weight is
- equal to
- half
- double
- quadruple
Q3 | A steel bar 2 m long, 20 mm wide and 10 mm thick is subjected to a pull of 2 kN. If the same bar is subjected to a push of 2 kN, the Poission's ratio of the bar in tension will be
- equal to
- less than
- greater than
Q4 | The breaking stress is
- equal to
- less than
- greater than
Q5 | Modulus of rigidity may be defined as the ratio of
- linear stress to lateral strain
- lateral strain to linear strain
- linear stress to linear strain
- shear stress to shear strain
Q6 | A simply supported beam 'A' of length l, breadth b, and depth d carries a central point load W. Another beam 'B' has the same length and depth but its breadth is doubled. The deflection of beam 'B' will be
- one-fourth
- one-half
- double
- four times
Q7 | The limit of eccentricity for no tensile condition for a column of circular section of diameter
- d / 4
- d / 8
- d / 12
- d / 16
Q8 | When a rectangular beam is loaded transversely, the zero stress is developed on the neutral axis.
- True
- False
Q9 | For no tension condition in the base of a short column of circular section, the line of action of the load should be within a circle of diameter equal to
- one half
- one-third
- one-fourth
- one-eight
Q10 | A pressure vessel is said to be a thick shell, when
- it is made of thick sheets
- the internal pressure is very high
- the ratio of wall thickness of the vessel to its diameter is less than 1 / 10
- the ratio of wall thickness of the vessel to its diameter is greater than 1 / 10
Q11 | A uniformly distributed load may be assumed to behave like a point load at the centre of gravity of the load for all sorts of calculations.
- Right
- Wrong
Q12 | A riveted joint may fail by
- tearing of the plate at an edge
- tearing of the plate across a row of rivets
- shearing of rivets
- any one of these
Q13 | A column that fails due to direct strss, is called
- short column
- long column
- weak column
- medium column
Q14 | The ultimate tensile stress for mild steel is
- equal to
- less than
- more than
Q15 | A load which acts at a point on a beam is not called uniformly distributed load.
- Agree
- Disagree
Q16 | Young's modulus may be defined as the ratio of
- linear stress to lateral strain
- lateral strain to linear strain
- linear stress to linear strain
- shear stress to shear strain
Q17 | The thermal or temperature stress is a function of
- increase in temperature
- modulus of elasticity
- coefficient of linear expansion
- all of these
Q18 | A section of beam is said to be in pure bending, if it is subjected to
- constant bending moment and constant shear force
- constant shear force and zero bending moment
- constant bending moment and zero shear force
- none of the above
Q19 | The rivets are made from ductile material.
- Yes
- No
Q20 | When there is a sudden increase or decrease in shear force diagram between any two points, it indicates that there is a
- point load at the two points
- no loading between the two points
- uniformly distributed load between the two points
- uniformly varying load between the two points
Q21 | A double strap butt joint with equal straps is
- always in single shear
- always in double shear
- either in single shear or double shear
- none of these
Q22 | The ratio of the largest load in a test to the original cross-sectional area of the test piece is called.
- elastic limit
- yield stress
- ultimate stress
- breaking stress
Q23 | Fatigue test is carried out for
- stresses varying between two limits of equal value, but of opposite sign
- stresses varying between two limits of unequal value, but of opposite sign
- stresses varying between two limits of unequal value but of same sign
- all of the above
Q24 | A spring used to absorb shocks and vibrations is
- conical spring
- torsion spring
- leaf spring
- disc spring
Q25 | The neutral axis of a beam is subjected to
- zero
- maximum tensile
- minimum tensile
- maximum compressive