Aparticular robotic arm requires a current pulse to start motion. design an rlc circuit that provides a current pulse to a 50 ω load with amplitude of 500 ma at 1 ms and maintains a current of 250 ma or higher for a duration of at least 1 ms. the current pulse should decay to below 50 ma for t > 15 ms. plot and analyze your result using matlab or spice simulation to verify your design.

Refrigerant 134a enters an insulated compressor operating at steady state as saturated vapor at -26°c with a volumetric flow rate of 0.18 m3/s. refrigerant exits at 9 bar, 70°c. changes in kinetic and potential energy from inlet to exit can be ignored. determine the volumetric flow rate at the exit, in m3/s, and the compressor power, in kw.

During a steady flow process, the change of energy with respect to time is zero. a)- true b)- false

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?