Q14 Three solid cylindrical rods are welded together to form the compound axial member. The member is attached to a fixed support at A. Each rod has an elastic modulus of E = 40 GPa. Given rod lengths and areas: L1 = 1,440 mm, L2 = 1,680 mm, L3 = 1,200 mm, A1 = 260 mm2, A2 = 130 mm2, and A3 = 65 mm2. What magnitude of external load P is needed to displace end D a distance u0 = 60 mm to the right?

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.

Describe one experiment in which the glass transition temperature and melting temperature of a totally amorphous thermoplastic material can be determined. show the relevant experimental results in a diagram which should be properly annotated with the two temperatures clearly marked. what is likely to happen to the curve in the diagram if the amorphous polymer is replaced by a thermosetting type?

Air inially occupying a volume of 1 m2 at 100 kpa, 27 c undergoes three internally reversible processes in series. process 1-2 compression to 500 kpa during which pv constant process 2-3 adiabatic expanslon to 100 kpa process 3-1: constant-pressure expansion to 100 kpa (a) calculate the change of entropy for each of the three processes. (b) calculate the heat and work involved in each process. (c) is this cycle a power cycle or refrigeration cycle?