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This set of Strength of Materials Multiple Choice Questions & Answers (MCQs) focuses on Strength Of Materials Set 20
Q1 | An overhanging beam must overhang on both sides.
- Right
- Wrong
Q2 | When a closely-coiled helical spring is subjected to an axial load, it is said to be under
- bending
- shear
- torsion
- crushing
Q3 | When the shear force diagram between any two points is an inclined straight line, it indicates that there is a uniformly varying load between the two points
- Yes
- No
Q4 | The assumption made in the theory of the reinforced cement concrete beam is that
- all the tensile stresses are taken up by the steel reinforcement only
- there is a sufficient bond between steel and concrete
- the steel and concrete are stressed within its elastic limit
- all of the above
Q5 | When a body is subjected to three mutually perpendicular stresses, of equal intensity, the ratio of direct stress to the corresponding volumetric strain is known as
- Young's modulus
- modulus of rigidity
- bulk modulus
- Poisson's ratio
Q6 | A pressure vessel is said to be a thin shell when the ratio of wall thickness of the vessel to its diameter is
- equal to
- less than
- greater than
Q7 | The shear force diagram of a cantilever beam of length l and carrying a uniformly distributed load of w per unit length will be
- a right angled triangle
- an issoscles triabgle
- an equilateral triangle
- a rectangle
Q8 | When a cantilever beam is loaded with concentrated loads, the bending moment diagram will be a
- horizontal straight line
- vertical straight line
- inclined straight line
- parabolic curve
Q9 | The efficiency of a riveted joint is the ratio of the strength of the joint to the strength of the solid plate.
- True
- False
Q10 | Which of the following statement is wrong?
- The deformation of the bar per unit length in the direction of the force is called linear strain.
- The Poisson's ratio is the ratio of lateral strain to the linear strain.
- The ratio of change in volume to the original volume is called volumetric strain.
- The bulk modulus is the ratio of linear stress to the linear strain.
Q11 | Strain energy is the
- energy stored in a body when strained within elastic limits
- energy stored in a body when strained upto the breaking of a specimen
- maximum strain energy which can be stored in a body
- proof resilience per unit volume of a material
Q12 | The bending stress in a beam is
- directly proportional to
- inversely proportional to
Q13 | Shear modulus is the ratio of
- linear stress to linear strain
- linear stress to lateral strain
- volumetric strain to linear strain
- shear stress to shear strain
Q14 | According to Euler's column theory, the crippling load of a column is given by P = ?2 EI / Cl2. In this equation, the value of C for a column with both ends hinged, is
- 1 ? 4
- 1 ? 2
- 1
- 2
Q15 | In watches, the spring is used to absorb shocks and vibrations.
- Yes
- No
Q16 | The ratio of shear modulus to the modulus of elasticity for a Poisson's ratio of 0.4 will be
- 5 ? 7
- 7 ? 5
- 5 ? 14
- 14 ? 5
Q17 | The shear force at the centre of a simply supported beam with a gradually varying load from zero at both ends to w per metre at the centre, is
- zero
- wl / 4
- wl / 2
- wl2 / 2
Q18 | 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
Q19 | A spring, when loaded, is permanently distorted and recover its original shape when the load is removed.
- Agree
- Disagree
Q20 | In calculating the strength of a riveted joint in tearing, shearing and crushing, the
- actual diameter of river is used
- actual diameter of hole drilled for rivet is used
- mean diameter of hole drilled and rivet is used
- smaller of the rivet diameter and hole diameter is used
Q21 | At the neutral axis of a beam
- the layers are subjected to maximum bending stress
- the layers are subjected to minimum bending stress
- the layers are subjected to compression
- the layers do not undergo any strain
Q22 | The equivalent length, of a given column with given end conditions, is the length of an equivalent column of the same material and cross-section with hinged ends, and having the value of crippling load equal to that of the given column.
- True
- False
Q23 | The slenderness ratio is the ratio of
- area of column to least radius of gyration
- length of column to least radius of gyration
- least radius of gyration to area of column
- least radius of gyration to length of column
Q24 | In order to know whether a column is long or short, we must know its slenderness ratio.
- True
- False
Q25 | The steel bars in a reinforced cement concrete beam are embedded
- in the centre
- near the bottom
- near the top
- at any position