La extensión de un resumen debe estar en un rango de del texto inicial. a)25 a 35 % b)10 a 20 % c)15 a 20 % d)20 a 25 %

Explain the difference laminar and turbulent flow. explain it with the shear stress and the velocity profiles.

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

Manometers are good examples of measuring instruments, nowadays they are not as common as before. a)-capacitive probe gauges b)-gravitational gauges deformation ) gauges d)-digital gauges