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1. Sketch the polar plot of the frequency response for the following loop transfer functions:
Gc(s)G(s) = 1 / ((1 + 0.25s)(1 + 3s))Gc(s)G(s) = 5(s^2 + 1.4s + 1) / (s - 1)^2Gc(s)G(s) = (s - 8) / (s^2 + 6s + 8)Gc(s)G(s) = 20(s + 8) / (s(s +2)(s + 2))
2. Sketch the Bode diagram representation of the frequency response for the transfer functions give in problem (1).
The voltage across the load must remain between 4.7 and 5.0 V for all values of load current. Design a voltage-divider network to supply the load. You may assume that resistors of any value desired are available.
Determine zero-input response of (D2+4D+40)y(t)=(D+2)x(t) with initial condition y0(0)=2 & dy0(0)/dt=16.78.
Plot the signal x(n) 0
The rotor of a 3phase, 5kw, 400v, 50Hz, slip ring indution motor is wound for 6 poles while its stator is wound for 4 poles. The approx average no load steady state speed when this motor is connected to 400v, 50Hz what is the supply
At what temperature are the two carrier densities equal?
A double-A (AA) rechargeable battery is rated at 1.2V, 2100mA-h ( mili-amp hours) 1- how many coulombs of charge can this battery hold 2- how many joules of energy are stored in the battery
For a circuit with resistor of 10 K ohm and a capacitor of 5 micro Farads, what is the time constant in second?
What sort of waveform does the input signal have? Is the input signal periodic or non-periodic? If the input waveform is non-periodic, what is its pulse width?
An LED with a rated range of VF = 1.4 V to 1.8 V at IF = 20 mA is connected to a driver circuit with a peak output of 14V. What value of current-limiting resistor would be needed to limit the LED current to a maximum value of 20 mA
Compute the power absorbed by an element in a circuit, but for a simple sinusoidal current i = sin(2πt/T) where T = 1 s.
Suppose we transmitted 5 cos wct for logic one and 15 cos wct for logic zero. Find the maximum signal energy. Design a demodulator and show the detection criterion for the output of the demodulator. Finally, find the bit error-rate.
Design a decade counter (negative edge-triggered counter) using flip flop circuit that can be used to perform binary counting. Show the timing diagram for the input and four outputs of the decade counter.
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