By driving a truck over a scale, it was determined that the loads on the front and rear axles are 18 kn and 12 kn, respectively, when the truck is empty. determine the weight and the location of the heaviest load that the truck can carry if the load on each axle is not to exceed 40 kn. three forces and a couple act on crank abc. determine the value of d so that the given system of forces is equivalent to zero at (a) point b, (b) point d.

During a steady flow process, the change of energy with respect to time is zero. a)- true b)- false

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

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