An imposed displacement field on a square geometry is given by u(x, y) = 1 + 3x + 4x 3 + 6xy 2 v(x, y) = xy − 7x 2 a) Determine the expressions for xx, yy and xy. What will be xy. b) Find the strain tensor at point (1,1) assuming plane strain case. c) Calculate the stress tensor at point (1,1) assuming plane strain case.

Acompressor receives the shaft work to decrease the pressure of the fluid. a)- true b)- false

Aflywheel accelerates for 5 seconds at 2 rad/s2 from a speed of 20 rpm. determine the total number of revolutions of the flywheel during the period of its acceleration. a.5.65 b.8.43 c. 723 d.6.86

Atank with constant volume contains 2.27 kg of a mixture of water phases (liquid-vapor). in the initial state the temperature and the quality are 127 °c and 0.6, respectively. the mixture is heated until the temperature of 160 oc is reached. illustrate the process in a t-v diagram. then, determine (1) the mass of the vapor in kg at the initial state, (2) the final pressure in kpa.