The open loop transfer function of a unity feedback system is given by G(s): (s+1) (s+2)(s+1+3)(8+1-3) a) Determine the centriod of the above transfer function. Enter your answer in the box: b) What is the effect of increasing pole-zero excess on system stability? Select your answer. O unstable bound. Ounstable unbound O Stable critical damp O Stable overdamp

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A NC lathe cuts two passes across a cylindrical workpiece under automatic cycle. The operator loads and unloads the machine. The starting diameter of the work is 3.00 in and its length = 10 in. The work cycle consists of the following steps (with element times given in parentheses where applicable): 1 - Operator loads part into machine, starts cycle (1.00 min); 2 - NC lathe positions tool for first pass (0.10 min); 3 - NC lathe turns first pass (time depends on cutting speed); 4 - NC lathe repositions tool for second pass (0.4 min); 5 - NC lathe turns second pass (time depends on cutting speed); and 6 - Operator unloads part and places in tote pan (1.00 min).   In addition, the cutting tool must be periodically changed. This tool change time takes 1.00 min. The feed rate = 0.007 in/rev and the depth of cut for each pass = 0.100 in. The cost of the operator and machine = $39/hr and the tool cost = $2.00/cutting edge. The applicable Taylor tool life equation has parameters: n = 0.26 and…

If our spindle RPM is 2500 and the material is mild steel what would the feed rate be in IPR with carbide cutter finishing? Select one: a..005 b. .002 c. .004 d. .003