Mechanics of Solids Mid - I, September - 2014

1.A body return back to its original shape and size after the removal of external force is said to be
  • Hardness
  • Toughness
  • Plasticity
  • Elasticity
Answer: D
2.Hooke’s law is applicable up to
  • Breaking point
  • proportional limit
  • Elastic limit
  • Yield point
Answer: C
3.The internal resistance offered by a material per unit cross-section area is called
  • Stress
  • Strain
  • Young’s Modulus
  • None
Answer: A
4.The ratio of lateral strain to the linear strain is called
  • Young’s modulus
  • Modulus of rigidity
  • Bulk modulus
  • Poisson’s ratio
Answer: D
5.The relation between Young’s modulus E and Bulk modulus K is given by (Where is Poisson’s ratio)
  • E = 2K(1 - 3)
  • E = 3K(1 - 2)
  • K = 3E(1 - 2)
  • K = 2E(1 - 3)
Answer: B
6.The stress in a body suddenly loaded is _____ to the stress if load is applied gradually
  • Equal
  • Twice
  • One-half
  • None
Answer: B
7.A beam which is fixed at one end and the other end is free is known as
  • Cantilever Beam
  • Simply Supported Beam
  • Fixed Beam
  • None
Answer: A
8.The bending stress at neutral axis is
  • Unit
  • Zero
  • Maximum
  • None
Answer: B
9.The product young’s modulus and moment of inertia is known as
  • Flexural Rigidity
  • Torsional Rigidity
  • Modulus of rigidity
  • None
Answer: A
10.Maximum Bending Moment of Simply Supported Beam of Length L carrying of Uniformly Distributed Load W is
  • WL2/8
  • WL2/6
  • WL2/4
  • WL2/2
Answer: C
11.Property of ductility is opposite to ____________
Answer: Brittleness
12.The ratio of direct stress to the corresponding volumetric strain is known as__________________
Answer: Bulk modulus
13.The ratio of change in length of the body to the original length is known as __________________
Answer: Strain
14.The proof resilience of a body per unit volume is known as ______________________
Answer: modulus of Resilience
15.The point where the BM is zero known as __________________
Answer: Point of contra flexure
16.Bending moment is maximum at a section where shear force is __________________
Answer: Zero
17.The sign convention for sagging bending module is ________________
Answer: Positive
18.Rate of change of shear force is equal to _________________
Answer: Load
19.The ratio of ultimate stress to design stress is _____________________
Answer: Factor of safety
20.Maximum shear stress max at neutral axis = _________________ times of average shear stress avg for rectangular section
Answer: 3/2