The cross section below has dimensions h = 144 mm, t_1 = 25 mm, t_2 = 23 mm and = 234 mm. determine the centroid position y.

determine the moment of inertia i_z with respect to the centroidal axis z.

determine the absolute value of the maximum normal stress a when the cross-section is subject to a moment m_z = 1286 n. m

Thermal stresses are developed in a metal when its a) initial temperature is changed b) final temperature is changed c) density is changed d) thermal deformation is prevented e) expansion is prevented f) contraction is prevented

An ideal otto cycle with air as the working fluid has a compression ratio of 8. the minimum and maximum temperatures in the cycle are 300 k and 1340 k. use constant specific heats at room temperature to determine (a) the amount of heat transferred to the air during the heat- addition kj/kg, (b) the thermal efficiency, and (c) the thermal efficiency of a carnot cycle ope limits. process, in rating between the same temperature

Which of the following components of a pid controlled accumulates the error over time and responds to system error after the error has been accumulated? a)- proportional b)- derivative c)- integral d)- on/off.