A bar of \(20 \mathrm{~mm}\) diameter is subjected to a pull of \(30 \mathrm{kN}\). The measured extensions over a guage length of \(200 \mathrm{~mm}\) is \(0.1 \mathrm{~mm}\) and the change in diameter is \(0.0034 \mathrm{~mm}\). Calculate the Poisson's ratio, modulus of elasticity and bulk modulus.