Each pole-zero diagram in Figure E.31 represents the poles and zeros of the loop transfer function (T(s)) of a feedback system. Sketch a root locus on each diagram. Two of these systems will become unstable at a finite, nonzero value of the gain factor âKâ in the loop transfer function. Which ones? Three of these systems are marginally stable for an infinite K. Which ones?
Systems that will go unstable for a finite, non-zero K B I
Three of these systems are marginally stable for an infinite K. Which ones?
Marginally stable systems for an infinite K A C G
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Hardwood comes from ____ trees that shed their leaves each year.
a.coniferous b.evergreen c.perennial d.deciduous
All of the following statements are true EXCEPT:
A. acceptable leakage from bearings can be from 300 to 600 drops in a minute. B. the supply of oil in the primer tank should be enough to fill the new oil filter as well as the oil lines in the block. C. when oil is apparent at some of the rocker arms, the lubrication system is primed and the valve covers can be installed. D. some pumps (the internal/external in particular) are not self-priming and must be filled with assembly lube before installation.
If a closed-loop servo system is in a balanced condition, the feedback signal will __________ if the set point changes.
A. increase B. decrease C. either a or b
D = Diameter of circle
Carry the answer to two decimal places.
If: D = 1.5What is the circumference of the circle?
Fill in the blank(s) with the appropriate word(s).