What the effect of zeta on the damping?

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What the effect of zeta on the damping?Why is less overshoot desired for practical systems?

9- The step response of a critically damped system is a. exponential rise b. sinusoidal c. sustained oscillation d. underdamped oscillation

Q/Design a circuit to limit a (20 Vrms) sinusoidal voltage to a maximum positive amplitude of (10 V) and a maximum negative amplitude of using a single (14 V) dc voltage source.

Answer the following questions for the given Question electrical system in the figure: ell I(s) a) Write the transfer function Vin(s)' b) Time constant of this circuit is 0.002sec and resistor has a value of R=5 Q. Calcule the inductance value L. c) Obtain the steady-state value of the current i(t) by using final- value theorem when the Vin = 5 Volt. d) Draw time response of the current i(t) when Vin = 5 Volt while indicating current values i(t) at the multiple values of the time V. R V. out in constant.

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The unit of the attenuation constant is: Select one: a. A/m b. A/sec c. V/sec d. Np/m e. rad/sec f. rad/m g. Np/sec h. V/m

21. A six-pulse SCR bridge for a three-phase source draws power from a 500 V, 50 Hz line (the volt- age is specified as the RMS line-to-line potential, as is standard in three-phase practice). The rec- tifier supplies a large dc motor. The motor has series inductance La = 0.4 mH and series resis- tance R₁ = 5 ms. The internal voltage Vg = kw, where k is a field flux constant equal to 3 V. s/rad, and w is the shaft speed in rad/s. The shaft torque is Tekia, where ia is the motor current. It is desired to operate this motor with a 250 A current limit to provide a controlled acceleration at start-up. Determine the SCR phase delay angle as a function of motor speed to enforce a 250 A current.

H6. Pianos have two or three strings for each note. A piano tuning system called beats occurs as a forced undamped oscillator model when the frequency of excitation is almost equal to the natural frequency of vibration. Suppose the natural frequency of the oscillator is exactly 1/? and that the frequency of the driving function is (1 + ?)/? where ? is a small number, either positive or negative.   a) Write a differential equation with the assumed characteristics.   b) Find the general solution of the differential equation written in item a) when ? = −0.1