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This set of Strength of Materials Multiple Choice Questions & Answers (MCQs) focuses on Strength Of Materials Set 35
Q1 | In case of thin walled cylinders the ratio of longitudinal stress to shear stress is
- 2
- 4
- None of the above
Q2 | A live load is one that
- Varies continuously
- Cannot be neglected
- Has lived and is no more in existence
- Remains constant
- Varies with time
Q3 | Within elastic limits the greatest amount of strain energy per unit volume that a material can absorb is known as
- Resilience
- Strain hardening
- Impact energy limit
- Proof resilience
- Shock proof energy
Q4 | The deformation of a steel bar under its own weight as compared to the deformation caused by a direct load equal to the weight of the shaft will be
- Double
- Four times
- Same
- Half
- One fourth
Q5 | Two shafts of the same material are subjected to the same torque. If the first shaft is of solid circular section and the second shaft is of hollow section whose internal diameter is 2/3 of the outside diameter, the ratio of weights of hollow shaft to solid shaft would be
- 1
- Less than 0.5
- Between 0.5 to 0.99
- 1.5 to 2
- 1 to 1.5
Q6 | A solid cube is subjected to equal normal forces of the same type on all its faces. The ratio volumetric strain/liner strain in any of the three xes will be
- 3
- 1
- 4
- 2
- 6
Q7 | With a punch for which the maximum crushing stress is 4 times the maximum shearing stress of the plate, the biggest hole that can be punched in the plate would be of diameter equal to
- 4 times the thickness of plate
- Thickness of plate
- 2 times the thickness of plate
- Inverse hyperbola
Q8 | A sheet metal 2 mm thick having a shear strength of 40 kg/cm2 is to receive a punch hole of 35 mm diameter. The force required to make the punching will be
- 12,540 kg
- 88 kg
- 4400 kg
- 2200 kg
- 17,600 kg
Q9 | The numerical value of Young's modulus of elasticity in ascending order for glass, aluminium, copper, wrought iron and tungsten are given by
- Glass, aluminium, copper, wrought, iron, tungsten
- Aluminium, glass, copper, wrought, iron, tungsten
- Wrought iron, copper, aluminium, glass, tungsten
- Tungsten, wrought, iron, copper, aluminium, glass
- Copper, aluminium, glass, tungsten, wrought iron
Q10 | Elasticity is the property of the material due to which it can be
- draw into wires
- beaten into sheets
- drawn into thinner sections
- rolled into bars
- None of the above
Q11 | An underground pipeline is laid in spring at 35?C. If the pipe is unable to contract, during winter when temperature drops to 5?C, the pipe will be under
- hoop stress
- Compressive stress
- hoop and compressive stresses
- tensile stress
- None of the above
Q12 | The maximum bending moment due to a moving load on a fixed ended beam occurs
- under the load only
- at mid span
- anywhere along the span
- at a support
- None of the above
Q13 | The stress strain curve for a glass rod during tensile test would exhibit
- A straight line
- A parabola
- A sudden break
- An irregular curve
- None of the above
Q14 | The ratio of the area under the bending moment diagram between any two points along a beam to the flexural rigidity EI gives the change to the following parameter between the two points
- deflection
- shear force
- slope
- bending moment
- None of the above
Q15 | The maximum strains at the end of plastic range of structural steel is about
- 0.11 percent
- 1.5 percent
- 11 percent
- 15 percent
- None of the above
Q16 | When the deformation arising from change of temperature is presented, the stresses set up are known as
- Compressive stresses
- Tensile stresses
- Shear stresses
- Thermal stresses
- None of the above
Q17 | A beam of uniform strength is the one in which
- B.M. is same throughout the beam
- Deflection is same throughout the length
- Bending stress is same in every section along the longitudinal axis
- Shear stress is uniform throughout the beam
- None of the above
Q18 | In design of a shaft, pulley and key for a system
- Shaft is the weakest member
- Pulley is the weakest member
- Key is the weakest member
- All are designed equally strong
- None of the above
Q19 | In case of a beam subjected to pure bending
- The nature of stress in any fibre is identical
- The stress intensity in any fibre is uniform
- The stress intensity in any fibre is proportional to the distance of the fibre from the neutral axis
- The stress intensity in any fibre is proportional to the distance of the fibre from the load carrying end
- The stress intensity in any fibre is inversely proportional to the distance of the fibre from the bottom of the beam
Q20 | A mild steel bolt of net cross-sectional area 8.4 sq. cm, diameter 37 will be safe to take a tensile load of about
- 75 tonnes
- 40 tonnes
- 30 tonnes
- 50 tonnes
- 60 tonnes
Q21 | The stress at neutral axis is
- Zero
- Minimum tensile
- Maximum compressive
- Maximum tensile
- Minimum compressive
Q22 | The ratio of bending moment at the centre of a simply supported beam of effective length L subjected to a central load W with that when the load W is uniformly distributed, will be
- 8
- 4
- 2
- 1
- None of the above
Q23 | A cantilever beam of square section is subjected to a load W at the free end. If the length of the beam is doubled and load reduced to half, the deflection at the free end as compared to original deflection would be
- 4 times
- 2 times
- 16 times
- half
- 8 times