Pre-Lab Questions In this lab, we will design a PD controller in the frequency domain using Bode plots, so that the step response satis es the following speci cations: (1) the rising time is 0 : 07 s; (2) the phase margin 75 degree; (3) the percentage overshoot is 5%; (4) the settling time is 0 : 12 s. We will nd the proportional and derivative gains required for the QUBE-Servo 2 system using the following procedure: 1. Find the proportional gain k p , so that the rising time of the step response of the closed-loop system with a proportional controller is 0 : 07 s.

Abrake has a normal braking torque of 2.8 kip in and heat-dissipating cast-iron surfaces whose mass is 40 lbm. suppose a load is brought to rest in 8.0 s from an initial angular speed of 1600 rev/min using the normal braking torque; estimate the temperature rise of the heat dissipating surfaces.

What is the main objective of using reheat rankine cycle?

Acommercial grade cubical freezer, 4 m on a side, has a composite wall consisting of an exterior sheet of 5.0-mm thick plain carbon steel (kst= 60.5 w/m k), an intermediate layer of 100-mm thick polyurethane insulation (kins 0.02 w/m k), and an inner sheet of 5.0- mm thick aluminium alloy (kal polyurethane insulation and both metallic sheets are each characterized by a thermal contact resistance of r 2.5 x 104 m2 k/w. (a) what is the steady-state cooling load that must be maintained by the refrigerator under conditions for which the outer and inner surface temperatures are 25°c and -5°c, respectively? (b) for power saving purpose, which wall material should be increased/reduced in. thickness in order to reduce 50% of the cooling load found in part (a)? redesign the thickness of the proposed material. 177 w/m-k). adhesive interfaces between the q=575.93 w