A copper tube with circular cross section has length L 5 1.25 m, thickness t 5 2 mm, and shear modulus of elasticity G 5 45 GPa. The bar is designed to carry a 300 N m? torque acting at the ends. If the allowable shear stress is 25 MPa and the allowable angle of twist between the ends is 2.58, what is the minimum required outer diameter d?

Draw the engineering stress-strain curve for (a) bcc; (b) fcc metals and mark important points.

Items are similar to the free issue items, but their access is limited. (clo5) a)-bin stock items free issue b)-bin stock controlled issue c)-critical or insurance spares d)-rebuildable spares e)-consumables

Liquid flows at steady state at a rate of 2 lb/'s through a pump, which operates to raise the elevation of the liquid 100 ft from control volume inlet to exit. the liquid specific enthalpy at the inlet is 40.09 btu/lb and at the exit is 40.94 btub. the pump requires 3 btu/s of power to operate. if kinetic energy effects are negligible and gravitational acceleration is 32.174 tt/s, the heat transfer rate associated with this steady state process is most closely 1)-2,02 btu/s from the liquid to the surroundings 2)-3.98 btu/s from the surroundings to the liquid. 3)-4.96 btu/s from the surroundings to the liquid. 4)-1.04 btu/s from the liquid to the surroundings.