What is the purpose of an engineering notebook? ОА. .
to record the design process
OB.
to record the manufacturing process
OC.
to record the brainstorming discussions
OD.
to record the performance of the prototype
O E.
to record the ideation process

Burgers vector is generally parallel to the dislocation line. a)-true b)-false

Which of the following components of a pid controlled accumulates the error over time and responds to system error after the error has been accumulated? a)- proportional b)- derivative c)- integral d)- on/off.

Ahe-xe mixture containing a 0.75 mole fraction of helium is used for cooling electronics in an avionics application. at a temperature of 300 k and atmospheric pressure, calculate the mass fraction of helium and the mass density, molar concentration and molecular weight of the mixture. if the cooling capacity is 10 l, what is the mass of the coolant?