(a) use the gauss-seidel method to solve the following system until the percent relative error falls below εs = 5%: [ 0.8 −0.4 − 0 .4 0.8 −0 .4 −0.4 0.8 ] { x1 x2 x3 } = { 41 25 105 } (b) repeat (a) but use overrelaxation with λ = 1.2.

The temperature of air decreases as it is compressed by an adiabatic compressor. a)- true b)- false

Hydraulic fluid with a sg. of 0.78 is flowing through a 1.5 in. i.d. pipe at 58 gal/min. the fluid has an absolute viscosity of 11.8 x 105 lbf-sec/ft2. is the flow laminar, turbulent or within the critical range? give both a numerical reynolds number and a term answer.

An open feedwater heater operates at steady state with liquid entering at inlet 1 with t? = 40°c and pl = 1 .2 mpa. water vapor att2-200°c and p2 = 1.2 mpa enters at inlet 2. saturated liquid water exits with a pressure of pa 1.2 mpa. neglect heat transfer with the surroundings and all kinetic and potential energy effects, determine the mass flow rate of steam at inlet 2 if the mass flow rate of liquid water at inlet 1 is given as 2 kg/s.