By changing the electromagnetic properties of the motor, we cau change the stren
ID: 2250223 • Letter: B
Question
By changing the electromagnetic properties of the motor, we cau change the strength of the back (specifically, the parameter K.) while leaving the other parameters unchanged. If we decrease Ke which of the following are true? (2 points) A) The overshoot and the rise time both decrease B) The steady-state output increases, aud the overshoot decreases C) The overshoot increases, while the settling time stays the sme. D) The steady-state output and the overshoot both increase E) The rise time increases, but the settling time sharply decreases F) None of the above are true. d. Let's say that we instead decide to increase Ke fron its original value of K,-5. Please estimate the rise time as a funetion of K. (2 points) e. True or fabe: the back emf is governed by the Law of Generators. (1 point) f. Because the voltage source is subject to noise, we deeide to put an ampliier and fiter circuit between the source and the motor, as shown below. What are the steady-state output and rise time of the new system? (Please use the original value for K, for this part.) (2 points) #70 Met f) 15Explanation / Answer
e) By changing the electromagnetic properties, the strength of Ke changes. So if we decrease Ke, then settling time may vary leads to constant decrease with respect to time thereby rise time increases rapidly.
e) False
The back emf is governed by "Lenz Law". The back emf refers to voltage in electric motors where the armature and magnetic field produced by motor filed coils have relative motion thus acts as generators.
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