+1-415-315-9853

info@mywordsolution.com

## Engineering

 Civil Engineering Chemical Engineering Electrical & Electronics Mechanical Engineering Computer Engineering Engineering Mathematics MATLAB Other Engineering Digital Electronics Biochemical & Biotechnology

problem1)

Draw graphs involving algebraic, trigonometric and logarithmic data from a variety of scientific and engineering sources, and find out realistic estimates for variables using graphical estimation techniques
a) The voltage v across an inductor L, in LR electrical circuit drops exponentially over time t (s).  The relationship is;

v=Ee-t/τ

Where the emf, E, and τ are constants.  Use the table of values for t and v and logarithms to plot an appropriate straight line graphs.
t    0.00    0.010    0.020    0.025    0.030    0.040    0.050
v    5.50    2.950    1.600    1.150    0.850    0.450    0.250
Use your graph to compute the values of E and?.  How long did it takes to half the initial voltage?

problem2)

Make estimates and determine engineering parameters from graphs, diagrams, charts and data tables

b) The following data are for cold-worked carbon steel tested in a tensile test:

Original diameter        :     12.725 mm
Final diameter            :     8.433 mm
Original gauge length  :     50.8 mm
Final gauge length      :     60.71 mm

(kN)    5.5    11.7    17.0    22.1    27.4    40.5    53.1    60.5    64.7    66.9    68.7    70.5    71.5    72.1    72.8
Extension
(mm)    0.010    0.020    0.030    0.040    0.050    0.076    0.102    0.127    0.152    0.178    0.203    0.254    0.305    0.356    0.508

The maximum load was 74.3 kN. Plot the stress – strain graph and determine;

i) realistic estimation of the modulus of elasticity

ii) relationship between stress and strain

Quetion3 )

Find out the numerical integral of scientific and engineering functions

c) Use the trapezium rule with eight strips to estimate the length of an ellipse circumference defined by:

d) Repeat problem1 using Simpson’s rules

problem4)

Estimate values for scientific and engineering functions using iterative techniques.

e) Use the Newton-Raphson method correct to 4 d.p. to find the roots of the following equation.
t2 e3t=25

problem5)

Represent force systems, motion parameters and wave forms as vectors and determine required engineering parameters using analytical and graphical methods

f) An aircraft of top speed 340 km per hour sets a course to the north-east but, owing to the prevailing wind, its actual speed relative to the ground is 450 km per hour in a direction of 40° east of north.  Using analytical and graphical methods:

• Represent the aircraft motion as vectors

• Determine the direction and the speed of the winds

g) Determine the resultant force acting on the eyebolt shown in Figure below as result of the four forces shown in the figure below, analytically and graphically.  Compare and comment on the two results

problem6)

Represent linear vector equations in matrix form and solve the system of linear equations using Gaussian elimination.

h) Use Gaussian elimination; find out the current, i1, i2, i3, in each branch of an electrical network thatproduced the following set of simultaneous equations

2i1-i2+i3 =-2

i1+2i2+3i3 = -1

2i1+2i2-i3= 8

problem7)

Use vector geometry to model and solve appropriate engineering problems

i) A force of magnitude 3 units acts at the point with coordinates (1,2,3).  The force is applied in the direction of the vector 3i-j+4k .  Find the moment of the force about O. Also find the moment of the force about the point with coordinate (1,2,3)

Electrical & Electronics, Engineering

• Category:- Electrical & Electronics
• Reference No.:- M91338
• Price:- \$95

Guranteed 48 Hours Delivery, In Price:- \$95

Have any Question?

## Related Questions in Electrical & Electronics

### Research paperwrite a research essay about zigbee for

Research Paper Write a research essay about zigbee for electrical class. The research paper should include four pages and three references.

### A create a vector a with elements from 1 to 100 store the

a. Create a vector a with elements from 1 to 100. Store the data of a in a file with filename test.txt. b. Create a vector b with elements from 100 to 1 and store the data of b in the file test.txt without deleting the d ...

### 1 in an incompressible flow the volume of the fluid is

1. In an incompressible flow, the volume of the fluid is constant. Using the continuity equation, ∇·v = 0, show that the fluid volume change is zero. 2. Find Dv/Dt in polar coordinates by taking the derivative of the vel ...

### A dc source supplies an inverter with bipolar pwm control

A DC source supplies an inverter with bipolar PWM control. The effective value of the output voltage on the fundamental frequency of 50 Hz is 220 V. The load is a serial R-L connection with a resistance R = 10 Ω and an i ...

### 1 learning outcomesat the end of this project students will

1. Learning outcomes At the end of this project, students will be able to: 1) Analyze power system faults based on balance and unbalanced faults techniques. (PLO4-CTPS-C4) 2) Express power flow analysis using EMTP softwa ...

### 1 we defined two security services for e-mail pgp and smime

1. We defined two security services for e-mail (PGP and S/MIME). Explain why e-mail applications cannot use the services of SSL/TLS and need to use either PGP or S/MIME. 2. Assume Alice needs to send an e-mail to Bob. Ex ...

### Want to explain or write report write some sentence under

Want to explain or write report. Write some sentence under each picture or write for all report .. just explain 1. Using oscilloscope, graph the voltage for node 1 to 21 in the schematic. 2. Explain each graph 3. Explain ...

### Approximate using a number of terms of your choice through

Approximate (using a number of terms of your choice) through the three forms of Fourier series expansion the periodic signal that is depicted in the following figure Each time, a. Plot the approximate signal in time of t ...

### Find the disruptive and visual corona voltage of a grid

find the disruptive and visual corona voltage of a grid line operating at 132kv ,conductor diameter =1.9cm,conductor spacing =3.81m,temp=44,pressure=73.7,conductor surface factor ;fine weather=0.8;rough weather=0.66

### 1 what is the magnetic flux crossing an infinitesimal

1. What is the magnetic flux crossing an infinitesimal surface oriented parallel to the magnetic flux density vector? 2. For what orientation of the infinitesimal surface relative to the magnetic flux density vector is t ...

• 13,132 Experts

## Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

### Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

### Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

### Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

### Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

### Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen