An imposed displacement field on a solid of square geometry idealized as plane strain case made of a linear isotropic material with material properties E = 30 × 106 psi and = 0.3 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

Acarnot refrigerator operates in a room in which the temperature is 21°c and of power when operating. if the food compartment of the refrigerator is consumes 3 kw to be maintained at 2°c, determine (a) the coefficient of performance of the cycle and (b) the rate of heat removal from the food compartment. refrigerator cycle that has a higher coefficient of performance than that of the discussed (e) is it possible to develop a carn ot refrigerator, operating between the same temperature limits? explain