Oil, with p=900 kg/m^3 and v=0.1 m^2/s, flows at 0.2 m^3/s, through a tube 200 mm diameter and 500 m length. determine: (i) the head loss (ii) the pressure drop if the pipe slopes down at 100 in the flow direction.

The temperature of air decreases as it is compressed by an adiabatic compressor. a)- true b)- false

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

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