Could you please solve 8.31 d

Discrete signal processing oppenheim

How does CAN protocol ensure the integrity of the data frame, making it suitable for the harsh environment like an automobile?

Consider an AM modulator with the followings: the message signal is m(t)= 0.5 cos (2πfmt), the carrier signal frequency is 200kHz, the carrier signal amplitude is unity, the amplitude sensitivity is 1.6. Which one is the power of the lower side-band ?

(1) Simulate dynamically a separately-excited DC motor with a block diagram modeling in SIMULINK. Use the following parameters: Ra=0.06; La=0.0018; ka=0.1; Bm=0.001; Jm=0.03; Va=1; Tl=0.01; Vd=1; Rd=0.01; Ld=0.01;

Show your block diagram with all connections among blocks as well as plot the input armature voltage, speed, torque and armature current.

(2) Repeat what was asked in the first question with this machine series connected.

(3) Repeat what was asked in the second question with this machine series connected and an AC input voltage instead of DC. Keep an amplitude of the AC voltage equal to 1.

Please Create the Verilog/Vivado Code For:

An LFSR Pseudonumber generator, and the testbench for test it,

please comment and explain the answer as much as possible

if possible, post Pic of the waveform simulation!

For a Tachometer measuring device, illustrate its elements and how each one of them is functioning, and give more information about its characteristics and applications

illustrate in 2 pages

For the following unbalanced 3Φ voltages V_a = 240/15° V, V_b = 340/-65° V, V_c = 400/105°V calculate:   

1. the positive sequence component V_a1

[Insert answer here]

2. the negative sequence component V_a2

[Insert answer here]

3. the zero sequence component V_a0

[Insert answer here]

4. show V_a1 + V_a2 +V_a0 = V_a

[Insert answer here]

1. A 3-phase, 5 kVA, 208 V, 4-pole, 60 Hz, star-connected synchronous generator has negligible stator winding resistance and a synchronous reactance of 8 Ω per phase at the rated terminal voltage. The generator is connected in parallel to a 3-phase, 208 V, 60 Hz infinite bus. All losses may be neglected.

a)   Determine the excitation voltage and the power angle when the machine is delivering rated apparent power at 0.8 PF lagging.

b)   If the field excitation is increased by 20 % without changing the prime mover power, find the stator current, power factor, and reactive power supplied by the machine.

c)   With the field current as in (a), determine the maximum power with which the generator can be supplied without losing synchronism? What are the corresponding stator current and power factor at this maximum power condition?

if the input signal is x(t)=exp[-at]u(t) and system impulse response is h(t)=u(t+2) what is the outpul signal y(t) ?

Discuss the role digital filters in the modern communication technology

What are the general steps for sinusoidal steady state analysis of a circuit? Is there a way to generalize the procedure?

a6) BJT theory, electrical engineering course.

i) We learned in lectures that to increase gm, one needs to increase collector current subsequently power consumption. There are two ways to increase collector current. What are they?

ii) Show that g_m of a BJT in active mode is larger than that in saturation mode

iii) What is r_be? r_be has two components, what are they and which one dictates?

iv) Show that g_m, g_o, and r_be are all related to the DC current of BJTs (This is the reason that these parameters are small-signal parameters as they are defined at a specific DC operating point).

A cross dipole is shown below, with the two arms centred at the z-axis, aligned along the x- and y-axes, and excited by uniform currents Ix and Iy, respectively. Using superposition and assuming the two dipoles do not interact with each other, derive an expression for the radiation intensity of the cross-dipole antenna using the auxiliary vector potential method. Use the far-field approximations (2.33) and (2.34) for determining the electric and magnetic fields.

Why most sets of Christmas (holiday) lights say not to connect more than 3 strands together? Explain in terms of resistance, and resistivity.