Monday 21 September 2015

Elasticity

Multiple choice questions on ELASTICITY

1) Hooks law is given by     
   a)  Stress α strain   b) Stress =strain     c)   Stress α 1/ strain   d) none of these
2) Young’s modulus of elasticity is   
  a) The ratio of longitudinal stress to the longitudinal strain
  b)  The ratio of volume stress to the volume strain
  c)  The ratio of shearing stress to the shearing strain 
  d) None of these
3) Modulus of rigidity is
  a) The ratio of longitudinal stress to the longitudinal strain
  b)  The ratio of volume stress to the volume strain
  c)  The ratio of shearing stress to the shearing strain 
  d) None of these
4) Bulk modulus is
  a) The ratio of longitudinal stress to the longitudinal strain
  b)  The ratio of volume stress to the volume strain
  c)  The ratio of shearing stress to the shearing strain 
  d) None of these
5) The torsion pendulum is designed using
   a) Viscosity    b) elasticity     c) surface tension      d) none of these
6) Which of the following property is used to determining the strength of a material?
     a) Viscosity    b) elasticity     c) surface tension      d) none of these
7) The relation between Y, K and η
     a) Y = 9 ηK/(3K+ η)   b) K = 9 ηY/(3Y+  η)  c) η = 9KY/(3K+  η)     d) Y = 3 ηK/(3 η+ K)  
8) SI unit of coefficient of modulus of elasticity is
    a) N/m2   b) Nm2     c)   Ns/m2    d) dyne –s/m2  
9) CGS unit of coefficient of modulus of elasticity is
    a) N/m2   b) Nm2   c)   Ns/m2   d) dyne /cm2
10) The tendency of the body to regain its original shape on removal the deforming force is called
      a) Viscosity    b) elasticity     c) velocity      d) none of these
11) Young’s modulus of elasticity is denoted by………….
     a)  k    b)Y        c) η         d)R
12)The compressibility is the reciprocal of the bulk modulus
   a)Bulk modulus    b)Young's modulus     c) modulus of rigidity        d)none of these
13) Bulk modulus of elasticity is denoted by………….
     a)  k    b)Y        c) η         d)R
14) Modulus of rigidity of elasticity is denoted by………….
      a) k     b)Y        c) η         d)R
15) ..........is the ratio of lateral displacement of any layer to its distance from the fixed layer.
     a) Tensile Strain     b) Shearing strain      c )Longitudinal Stress    d) Longitudinal Strain
16) ..........is the ratio of the change in length per unit original length, without any change in shape.
     a) Tensile Strain     b) Shearing strain      c )Longitudinal Stress    d) Longitudinal Strain
17) ..........is the ratio of change in volume per unit original volume.
     a) Tensile Strain     b) Shearing strain      c )Longitudinal Stress    d) Longitudinal Strain
18) .......... is dimensionless quantity.
    a) Stress      b) Strain      c) Young modulus   d) Bulk modulus
19) The torsion pendulum is designed using
    a) Viscosity     b)  Elasticity      c) Plasticity   d) none of these
20) .......... is used to determine the strength of material.
    a) Viscosity     b)  Elasticity      c) Plasticity   d) none of these


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