Around steel bar having sy = 800 mpa is subjected to loads producing calculated stresses of p∕a = 70 mpa, tc∕j = 200 mpa, mc∕i = 300 mpa, and 4v∕3a = 170 mpa. (a) sketch mohr circles showing the relative locations of maximum normal stress and maximum shear stress. (b) determine the safety factor with respect to initial yielding according to the maximum-shear stress theory and according to the maximum-distortion-energy theory.

Asingle-geared blanking press has a stroke of 200 mm and a rated capacity of 320 kn. a cam driven ram is assumed to be capable of delivering the full press load at constant force during the last 15 percent of a constant-velocity stroke. the camshaft has an average speed of 90 rev/min and is geared to the flywheel shaft at a 6: 1 ratio. the total work done is to include an allowance of 16 percent for friction a) estimate the maximum energy fluctuation b) find the rim weight for an effective diameter of 1.2 m and a coefficient of speed fluctuation of 0.10

The thermal expansion or contraction of a given metal is a function of the f a)-density b)-initial temperature c)- temperature difference d)- linear coefficient of thermal expansion e)- final temperature f)- original length

Atmospheric air has a temperature (dry bulb) of 80° f and a wet bulb temperature of 60° f when the barometric pressure is 14.696 psia. determine the specific humidity, grains/lb dry air. a. 11.4 c. 55.8 d. 22.5 b. 44.1