history of induction type instruments, review of induction type instruments, current information about induction type instruments

A two 3- phase transmission lines A & B have the following data: VS = VR = 33 KV/ph , ZA = 2 + j 5 Ω/ph & ZB = 1 + j 6 Ω/ph. Each one delivering 10 MVA at unity p.f. Find:

(a)Voltage regulation (b) efficiency and (c) load angle of each T.L.

Matlab program

Create a function, when given a two-digit integer as input, prints the equivalent English phrase. For example, given 39, output thirty-nine. Limit the input numbers to be in the range 21 to 39.

What is the dc gain of a filter with difference equation ?[?] = ?[?] + ?[? − 1]? Show your work.

A DT system has frequency response ?(? ??) = 2 (1 − 0.5? −?? ⁄ ). Calculate the magnitude of the frequency response at an input frequency of 2.2 radians.

A DT system has a difference equation ?[?] = 2?[? − 1] + ?[?] − 0.5?[? − 2]. What are the a and b coefficient arrays in the MATLAB filter function?

A periodic DT signal ?[?] = {2, −1, −2, k} (one period shown) has an average power of 9⁄2. What is the numeric value of ??

Used to determine the stability of a system by examining the characteristic equation of the transfer function. States that the number of roots of the characteristic equation with positive real parts is equal to the number of changes of sign of the coefficients in the first column of the array.

• A. Routh-Hurwitz Criterion

• B. Polar plot

• C. Logarithmic plot

• D. Bode plot

1. Name one method to eliminate Image Frequency problems.

2. Direct Conversion Receivers are used to receive FM broadcasts. True or False

3. Noise is directly proportional to…and…

4. If your signal is 5 uV and the noise is 0.9 uV, what is the S/N Ratio?

5. What is the open circuit noise voltage across a 100 kΩ resistor over the frequency range of DC to 20 Hz at 250C?

Kit Requirements:

• Arduino Uno
• Small breadboard
• Jumper wires
• 10kΩ potentiometer
• 10kΩ resistor (x2)
• 220Ω resistor (x3)
• USB cable
• Photoresistor
• TMP36 temperature sensor
• Digital Multimeter

Lab 3a:

Procedure:

·         Watch the videos:

o   Tutorial 03 for Arduino: Electrical Engineering Basics(https://www.youtube.com/watch?v=abWCy_aOSwY)

o   Tutorial 04 for Arduino: Analog Inputs (https://www.youtube.com/watch?v=js4TK0U848I)

o   TechBits 13 - Analog and Digital Signals (https://www.youtube.com/watch?v=Z3rsO912e3I)

·         Construct the breadboard circuit and implement the program presented in the video to create an adaptable night light and detailed in Chapter 2 (pp.35-39) of your textbook.

Lab 3b:

Procedure:

This week’s lab will simulate the coffee maker heater functionality we saw in Week 1. The difference in our program and the actual coffee maker is that instead of turning on a heating element, our program will blink an LED.

·         Design a circuit and Arduino program that expands the concepts explained in Chapter 3 ( pp. 52- 59) of your textbook and accomplishes the following:

o   Blinks an LED when the temperature of a temperature sensor is at or below room temperature for more than 5 seconds

o   If the temperature exceeds room temperature for more than 5 seconds, the LED will turn off.

·   

Explain with the aid of diagrams, the operations involved in converting an analog wave form into a sequence of bits

You are given the following components in a Light Sensor Circuit:

Your goal is to design a light sensor circuit which turns on the LED when it is in a dark room, and turn off the LED when the room is lit. The LDR has a resistance value which changes according to the presence of light in the room, as shown in the first table. The LED turns on when it is given the voltage and current rating in the second table.

4. Use generate statement to write VHDL code for a 16 bit adder assuming the only available building block is a full adder. Thank

I am trying to create an 8-bit random number generator in verilog code using a mux, a d flip flop and a LFSR not sure what I am doing wrong but need some help with getting it working properly any help would be greatly appreciated.

here is what I have so far:

module RNG #(parameter size=8)(output [7:0]SO,output [7:0] RN,input clk,rst,input[size-1:0]seed,input L);
   wire [7:0] Sin=SO[7]^SO[5]^SO[4]^SO[3];
   ffw F1 (SO,clk,rst,Sin);
   MUX M1 (Sin,seed,{SO[size-2:0],next},L);
   xor X1 (next,SO[6],SO[7]);
   assign RN=next;
endmodule
module ffw #(parameter size=8)(output reg [size-1:0]SO,input clk,rst,input [size-1:0] Sin);
   always @(posedge clk or posedge rst)
       begin
       if(rst==1)
           SO=0;
       else
           SO=Sin;
       end
endmodule
// input A1 = Seed, input B0 =Sin ,L=SEL,
module MUX #(parameter size=8)(output[size-1:0]SO,input[size-1:0]Sin,seed,input L);
   assign SO = (L) ? Sin:seed;
endmodule
module RNG_TB();
   reg clk;
   reg rst,L;
   wire [7:0] SO;
   reg [7:0] seed;
   wire [7:0] RN;
   integer x;
   RNG RN1 (SO,RN,clk,rst,seed,L);
   initial begin
       x=0; clk=0; rst=1; L=0; #5;
       rst=0; L=0; seed=255; #5;
       rst=0; L=1; seed=255; clk=1; #5
       L=0;
       repeat (10) begin
           clk = ~clk; #10;
           x=x+1;
           $display("x=%d,clk=%d,SO=%b",x,clk,SO);
           clk = ~clk; #10;
       end
   end
endmodule

(a) Chau’s electric circuit is a simple electronic circuit that can exhibit chaotic behaviour. The voltages x(t) and y(t), and current z(t), across components in the circuit can be investigated using the Matlab command

[t,xyz] = ode45(@ChuaFunction,[-10 100],[0.7 0.2 0.3]);

and the function:

1 function dxyzdt = ChuaFunction(~,xyz)

2 % xyz(1) = X, xyz(2) = Y, xyz(3) = Z

3 4 dxdt = 15.6*(xyz(2) - xyz(1) + 2*tanh(xyz(1)));

5 dydt = xyz(1) - xyz(2) + xyz(3);

6 dzdt = -28*xyz(2); 7

8 dxyzdt = [dxdt dydt dzdt]’;

9 end

(i) What is the differential equation involving x˙(t)? Here a dot represents differentiation with respect to time t.

(ii) What is the initial condition for the variable y(t)?

(iii) What does the apostrophe after the square brackets in line 8 of the function signify and why is the apostrophe needed here?

(b) For a given function u(t), explain how the derivative of u(t) with respect to t can be approximated on a uniform grid with grid spacing ∆t, using the one-sided forward difference approximation

du/dt ≈ Ui+1 − Ui/ ∆t ,

where ui = u(ti). You should include a suitable diagram explaining your answer

(c) Using the one-sided forward difference approximation from part (b) and Euler’s method, calculate the approximate solution to the initial value problem

du/dt + t cos(u) = 0, subject to u(0) = −0.2,

at t = 0.4, on a uniform grid with spacing ∆t = 0.1.

Q2-B) Answer the followings:
I. Identify the addressing mode for Two of the following instructions:
SBB AX,SI MOV [BX]+1234H,AL XCHG DL,[BP+20H]
II. True or False and why correct the false one:
1- A 20-bit address bus sports 20,000 memory addresses
2-A machine cycle refers to fetch an instruction
3-A memory with 256 addresses has 256 address lines

I want the answer in 45 minutes