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# Electronic Engineering

### Nyquist, Bode Plot and Root Locus

A) Analyse the closed loop stability of the system with open loop transfer function {see attachment} i)Make a sketch of the Bode diagram and hence the full Nyquist diagram, showing all relavent details ii) If the system is unstable, state the number of closed loop right hand plane poles and comment on how you might stabili

### Root Locus of a System

Draw the root locus for the system with the open loop transfer function given in the attachment that is connected to a negative feedback loop and confirm the relevant break-away points are at s = 0 and s = -1. See the attached file.

### Determining sequence of output waveforms

I have come across this question in a mock exam paper and although I believe it is quite simple, I am having problems deciding how to complete this question. Could you please answer this question and explain your results so that I can understand how to answer such questions in the future. Please see the attachment

### Autocorrection Function of a Given Waveform

The autocorrection function of this waveform, R(x), is given by... Please see the attachment to help me select the appropriate choice from the given options.

### Baseband Signal and Amplitude-Modulated Signal

See attached pdf file.

### Design a Highpass FIR Filter Using Kaiser Window

Design a highpass FIR filter using Kaiser window design technique. This problem is from the textbook 'Digital Signal Processing using MatLab' by Ingle/Proakis. Design a highpass FIR filter using Kaiser window design technique. The specifications are: Stopband edge: 0.4pi;, As = 60dB Passband edge: 0.6pi;, Rp = 0.5dB W

### (12.13} Find v and i for the circuit shown. Assume an ideal op amp. Please show how you arrived at your answer, and why the final answer is a positive or negative number.

Find v and i for the circuit shown. Assume an ideal op amp. Please show how you arrived at your answer, and why the final answer is a positive or negative number. ================================================= v= a) -5V b) -4V c) +4V d) +5V ============================================= i= a) -0.25ma b) -0.2ma c) +

### Problem on how to find the voltage gain of the amplifier

A power amplifier when driven by a current source of 5mA rms and a source resistance of 8k, delivers 12.5W signal power to an 8k load resistance. Find peak to peak value of the output voltage. If the input voltage to the amplifier shows 5V rms, determine the voltage gain of the amplifier. Show how you arrived at your answer.

### Determine the mesh current in the circuit

Determine the mesh current ia and mesh current ib in the circuit shown (see attached pdf file).

### Determining Angular Frequency from Period

A sinusoidal voltage has a maximum value of 100V, and the value is 10V at t=0. The period is T=1ms. Determine the angular frequency, w, in rad/sec. a) 3.14 b) 6.28 c) 3142 d) 6283

### FINFET---a type of MOSFET

The question is below. Please include where you find the resource to answer this question. Thanks. As the gate length of MOSFET transistor shrinks to nanometer scale, the operation of MOSFET is limited by fundamental physical process. One of the most severe limitation is the inability to reach complete cut-off mode for nano

### Bode Plots and Harmonic Response

Please see attachment. a) Draw the Bode plot (on semi-logarithmic graph paper) of the transfer function. see attached aii) From the Bode plot, what would the approximate harmonic response of the above system to an input, u(t)=sin(2t)? Confirm your answer by simple calculation.

### Numerical Integration and Euler's Formula

For this question, please leave out the proof. Assume the formula is already known. Also, instead of assuming a unit step of U(t) = 1(t), change the question to a sinusoidal input of U(t) = sin(2t). Please solve this question and explain all the steps in detail.

### An RL Circuit with Switches at T=0 Switch S1 Opens

An RL circuit with switches is shown in the figure. Switch s1 remains closed and s2 remains open for a long time (steady-state). At t=0 switch s1 opens and s2 closes. Find V_1(t) for t > 0.

### LC Circuit with constant current source and 2 switches

Hi, I know you do not do homework assignments but I am studying for a test tomorrow and these are practice tests with no answers and so I really need to learn how to do them. Could you please help me understand the entire problem (again, this is not a homework problem, just practice)? See the attachment.

### Systems and Simulation: Bode Plots

For a "notch" filter with transfer function P(s) = [s^2 + 0.1s + 1]/[s^2 + 10.1s +1] i) Sketch the asymptotic Bode magnitude plot on a piece of logarithmic graph paper ii) Correct your asymptotic sketch at 0.5, 1 and 2 times the value of each corner frequency, and iii) Make a reasonable sketch of the Bode phase plot on a sepa

### Find the diode current in the bridge circuit.

Find the diode current in the bridge circuit. Assume that the diode drop is 0.7 V. See Jpeg attachment.

### System Peak Time and Overshoot

Please see the attached file for full problem description. I am not too sure how to go about solving this question. Any help would be appreciated.

### Dynamic Behaviour of a System

Could you please simulate the dynamic behaviour of the system using matlab and simulink for the mass - spring system? Please refer to the attachment.

### Finding appropriate source for the electrical load

Have four circuits. One takes 9Vdc, two 5Vdc, and last one takes 12Vdc. Have variable transformer for source. How do I calculate or choose the voltage needed to run all four circuits with out blowing them all up, and at the same time run each circuit by themselves or two at a time or three, etc. How do I know how much curren

### Theveninization of a Transistor Circuit

Find Icq and Vceq for the circuit when Beta=100. I put the 60k and 30 k resisters in parallel and then did a thevenin equivalence on the parallel combination resistance and the 20k ohm resistor. Then, I did kvl around the b-e loop and got icq=.021ma and vce=.39v. Did I do the thevinin equivalence correctly? See the attach

### Complimentary Output Rectifier

In the complementary output rectifier, If Vs=26*sin 2*pi*60*t Volts, sketch the output waveforms vo+ and vo- versus time, assuming Vgamma=.6V for each diode. I don't understand the graphic questions. Will there ever be a time when the voltage goes negative? because it looks like a FWR. Thanks

### Heating Element Conducted

An electric heating element is connected to a 110 v circuit and a current of 3.2 A is flowing through the element. How much energy is used up during a period of 5 hours by the element? (a) 352wh (b) 550wh (c) 1,760wh (d) 2,580wh

### Deriving a multilevel circuit

Consider the function in the attached file- the cost of the minimal SOP expression is 14, which includes four gates and 10 inputs to the gates. Use Shannon's expansion to derive a multilevel circuit that has a lower cost and give the cost of your circuit.

### Design a circuit that implements f using the minimal number of two-input LUTs

Consider the function (see the attached file). Design a circuit that implements f using the minimal number of two-input LUTs. Please see the attached MS Word File.

### Design the simplest POS circuit that implements the function.

Design the simplest POS circuit that implements the function. f(x1,x2,x3) = PRODUCT M(0,2,5) A. f = (x1 + x3)(xbar + x2 + xbar3) B. f = (x1 + x3)(xbar1 + xbar3) C. f = x1(xbar1 + x2 + xbar3) D. f = (x1x3)(xbar1 + x2 + xbar3)

### Relationship of Logic Expressions

Determine the relationship between the two logic expressions. Please see attached MS Word file for the complete program, in order to answer which of the following relationships is true. A. f= g+x1 B. f= g C. f= g + x2 D. none of the above

### Ripple voltage in diode circuit

Determine the capacitance required in a half wave rectifier to produce a ripple voltage less than 0.2V. Assume that the input is a 60Hz signal with maximum voltage VM=100V and the load resistance R= 10kW. I'm confused. What formulas do I use and how do I solve this?

### Problems with Clocks in Digital Circuits

Is/Are there any problem(s) that a digital circuit may have, if I put an inverter in the Clock's path? If so, can we avoid it (them)?

### Magnetostatics and Maxwell's Equations for the Time Varying Field

Questions on Magnetostatics and Maxwell's Equations for the Time Varying Field are attached.