4) In the Galileo-Navier-Rankine strength criterion the limit on the material strength is given by: a) the maximum shearing stress; b) the maximum and minimum normal stress; c) the density of the strain energy. 5) The Huber-Hencky-Von Mises strength criterion: a) is always more conservative than Tresca criterion; b) is more complicated to implement numerically than the Tresca criterion; c) in the principal stress space the domain is a cylinder. 6) The Poisson's ratio v: a) is one of the 3 parameters on which linearly elasticity of a body depends; b) if equal to 0.5 can be proper of an icompressible material; c) is the ratio between the dilation in the loading direction and the dilations in the direction orthogonal to the load.

4) In the Galileo-Navier-Rankine strength criterion the limit on the material strength is given by: a) the maximum shearing stress; b) the maximum and minimum normal stress; c) the density of the strain energy. 5) The Huber-Hencky-Von Mises strength criterion: a) is always more conservative than Tresca criterion; b) is more complicated to implement numerically than the Tresca criterion; c) in the principal stress space the domain is a cylinder. 6) The Poisson's ratio v: a) is one of the 3 parameters on which linearly elasticity of a body depends; b) if equal to 0.5 can be proper of an icompressible material; c) is the ratio between the dilation in the loading direction and the dilations in the direction orthogonal to the load.