(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.

Which of the following ziegler nichols tuning methods the response of the controller to a step input should exhibit an s-shaped curve? a)-open loop mode b)-closed loop mode c)-both modes (open & closed) d)-none of the modes (open & closed)

Air flows over a heated plate àt a velocity of 50m/s. the local skin factor coefficient at a point on a plate is 0.004. estimate the local heat transfer coefficient at this point.the following property data for air are given: density = 0.88kg/m3 , viscosity 2.286 x 10 ^-5 kgm/s , k = 0.035w/mk ,cp = 1.001kj/kgk. use colburn reynolds analogy.

Wiy doeres rere okhn a pump whon working betwon the same pressure range?