Strains are measured on the surface of a brass alloy part as follows: εxx = 1600 10−6, εyy = 1300 10−6, and γxy = 1500 10−6×××estimate the in-plane stresses σxx, σyy, and τxy, and also the strain εzz normal to the surface. (assume that the gages were bonded to the metal when there was no load on the part, that there is no yielding, and that no loading is applied directly to the surface, i. e., σzz= τyz= τzx= 0).

For the closed feedwater heater below, feedwater enters state 3 at a pressure of 2000 psia and temperature of 420 °f at a rate of ix10 ibhr. the feedwat extracted steam enters state 1 at a pressure of 1000 psia and enthalpy of 1500 btu/lbm. the extracted er leaves at an enthalpy of 528.7 btu/lbm steam leaves as a saturated liquid. (16) a) determine the mass flow rate of the extraction steam used to heat the feedwater (10) b) determine the terminal temperature difference of the closed feedwater heater

Shafts are machine elements that are used to a) carry axial loads b) direct shear loads c) transmit power d) rotate at constant speed e) none of the above circular and square shafts subjected to the same torque under the same circum behave a) the same way b) almost the same way

Inspection for bearing condition will include: (clo4) a)-color b)-smell c)-size d)-none of the above