Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Electrical & Electronics Expert

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

Load
(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:

1337_ellipse circumference.jpg
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

668_Force on eyebolt.jpg

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

In a switch using the token bucket algorithm tokens are

In a switch using the token bucket algorithm, tokens are added to the bucket at a rate of r = 5 tokens/second. The capacity of the token bucket is c = 10. The switch has a buffer that can hold only eight packets (for the ...

1 two point charges each of mass m and charge q are

1. Two point charges each of mass m and charge q are suspended by strings of length l from a common point. Find the value of q for which the angle made by the strings at the common point is 90°. 2. Point charges Q and ar ...

1 outline the steps involved in the magnetostatic field

1. Outline the steps involved in the magnetostatic field analysis of a parallel plate structure and the determination of its inductance. 2. Outline the steps involved in the electromagnetostatic field analysis of a paral ...

An initially straight beam ab is bent into a circular arc

An initially straight beam AB is bent into a circular arc A'B' as shown in the figure. The deformation is specified as Where g(X 2 ) is a simple function of X 2 . (a) Find the deformation gradient in terms of g(X 2 ). (b ...

For a system specified by the transfer functionwrite sets

For a system specified by the transfer function write sets of state equations for DFII and its transpose, cascade, and parallel forms. Also write the corresponding output equations.

1 state the relationship between polarization current

1. State the relationship between polarization current density and electric field intensity. How is it taken into account in Maxwell's equations? 2. What is the revised definition of D? 3. State the relationship between ...

1 discuss the general solutions for the line voltage and

1. Discuss the general solutions for the line voltage and current in time-domain and the notation associated with their representation in concise form. 2. What is the fundamental distinction between the occurrence of the ...

A bug starts at a point and travels 1 m northwardm

A bug starts at a point and travels 1 m northward, m eastward, m southward, m westward, m northward, and so on, making a 90°-turn to the right and halving the distance each time. (a) What is the total distance traveled b ...

1 define wavelength how is it related to the phase

1. Define wavelength. How is it related to the phase constant? 2. What is the relationship between frequency, wavelength, and phase velocity? What is the wavelength in free space for a frequency of 15 MHz? 3. What is the ...

1 what are the 3 positions of the toggle switch which one

1. What are the 3 positions of the toggle switch? Which one cannot be used? 2. Explain the configuration of a breadboard. What holes are connected? How is it powered? 3. What components in the circuits implemented in thi ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

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.

Ask Now Help with Problems, Get a Best Answer

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