Assume a transmission line with ZL = 100 − j25Ω and Z0 = 50Ω. Using the smith chart, find i) the normalised load impedance; ii) the corresponding reflection coefficient; iii)
the standing wave ratio; iv) the distance between the load and the first voltage maximum; v)
the distance between the load and the first voltage minimum; vi) the normalised admittance;
vii) the input impedance at 0.2λ from the load. (Show all steps on the Smith chart)

Draw an electrical door warning control circuit for the aircraft toilet "Vacant" (red light) and "In-use" (green light) sign.

The circuit components must include (but are not limited to) the following:
1. a 24 VDC supply,

2. switch(es),

3. relay(s),

4. 2 x 1 kΩ resistors,

5. 2 LEDs (a RED and a GREEN), and

6. earth/ground.

Circuit operation:
The main voltage source is supplied from a 115 VAC generator. A resistor is individually connected to each LED lights that limits the current flow. The turning ON/OFF of the "Vacant" and "In-use" sign is controlled by a SPDT micro switch which allows only one LED to be lighted.

1. Using behavioral VHDL, design a Moore-type finite state machine that detects input test vector that contains the sequence of ‘100’. If the sequence ‘100’ is detected, the output Z should go high. The input is to be named W, the output is to be named Z, a Clock input is to be used and an active low reset signal (Resetn) should asynchronously reset the machine.

a) Draw the Moore-type model state diagram for the FSM.

b) Write the VHDL code to implement the FSM.

Signals and systems

Find the complex exponential Fourier series for the following signals. In each case plot the magnitude and phase line spectra for k ≥ 0.

(i) x1(t) = cos(5t + 45o )

(ii) x2(t) = sin2 (t)

(iii) x3(t) = cos(3t) + cos(5t)]

I need a synthesizable Verilog code/module implementing the IEEE 754 Floating Point multiplication and a corresponding test bench. It should set a flag for underflow and overflow conditions if they arise during the multiplication for the output. It would be greatly appreciated if someone could write this floating point multiplication code in Verilog with some comment lines so i could understand the functioning too with a test bench module ! I have tried to explain everything as clearly as possible and really hope someone can help me out here !

1. Discuss what will happen to the modulation process of an amplitude modulation (AM) signal if the carrier signal level remains constant and the sideband signal level increases and justify your answer

2. A normal modulation usually has a modulation index ranges from 0 to 1 but in some rare cases, the modulation index can be greater than 1. Discuss what will happen to the output of the receiver if this situation happens.

Consider the transfer function G(s) = 1/[(s+1)^2(s+2)]. We use a PI compensator C(s)=(as+b)/s and close the feedback loop.

1.) Find out the entire range of a and b at which the closed-loop is stable and show it on the plane with a and b axes.

2.) At the border of instability, find the frequency of oscillations in terms of a.

3.) For what value of a, do we get the largest range of b for stability? What is this largest range?

A parallel-plate vacuum capacitor has 8.22 JJ of energy stored in it. The separation between the plates is 3.50 mmmm.

Part A

If the separation is decreased to 1.80 mmmm, what is the energy now stored if the capacitor was disconnected from the potential source before the separation of the plates was changed?

Express your answer in joules.

U = ?? J

Part B

If the separation is decreased to 1.80 mmmm, what is the energy now stored if the capacitor remained connected to the potential source while the separation of the plates was changed?

Express your answer in joules.

U = ?? J

(A) - sketch a 4bit R-2R ladder digital to analog converter with reference voltage,Vref=10. by using thevenin theorem,derive the expression of Vout when MSB only turn 'on',LSB only turn 'on' and for an input B3B2B1B0 = 1010 and general expression for Vout

(B) -- based on question (A) calculate Vout using the data in the table below

Explain the relevance of earthing and bonding in an electrical Installation.
(b) Explain how a load is wired to an MCB and how the MCB is supplied with power from
the distribution board.

An air-filled parallel-plate capacitor with plate separation d and plate area A is connected to a battery that applies a voltage V₀ between plates. With the battery left connected, the plates are moved apart to a distance of 10d. Determine by what factor each of the following quantities changes: (a) V₀; (b) C; (c) E; (d) D; (e) Q; (f ) ρ_S; (g) WE. Repeat the exercise for the case in which the battery is disconnected before the plates are separated.

Updates Question.                                         Consider the full- bridge single-phase inverter with input voltage equal to 400V. This inverter is controlled by unified PWM technique.The aim is to generate a half-wave symmetry waveform with 5 pulses in each half-cycle.The RMS and frequency of output voltage are assumed 100V and 50Hz, respectively.        a) Draw its power circuit.                             b) Obtain the switching table of the inverter.                                                          c) Calculate the width of each generated pulses at the output voltage.                        d) Find the amplitude modulation index.    e) Obtain the frequency modulation index.                                                               f) Calculate the frequency of carrier signal.                                                               g) Draw the waveforms of refrence and     carrier signals.                                                 h) Obtain the waveform of the output voltage.                                                           i) Design the trigger signals of switches.    j) Calculate the amplitude of fundamen-    tal component.                                               Thanks for your help.

question 1. in no more than 100 words how to give technical comments for (cattle or anythings you found, for example, laptop, keyboard, phone, supper cars) I'm just looking for how to make positive comments on one of these things.

question 2. in no more than 100 words based on question 1 explain how you intended the recipient to benefit from the comments (feedback).