Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Electrical & Electronics Expert

Task 1: Draw graphs comprising algebraic, trigonometric and logarithmic data from a range of scientific and engineering sources, and find out realistic estimates for variables by using graphical estimation methods.

The voltage v across an inductor L, in LR electrical circuit drops exponentially over time t (s). The relationship is:

v = Ee-1/ 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 estimate the values of E and τ. How long did it takes to half the initial voltage?

Task 2: Make estimates and find out engineering parameters from graphs, diagrams, charts and data tables.

The given 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 

1955_load extension.jpg

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

a) Realistic estimation of the modulus of elasticity.
b) Relationship between stress and strain.

Task 3: Find out the numerical integral of scientific and engineering functions.

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

2306_trapezium rule.jpg

Repeat Task1 using Simpson’s rules.

Task 4: Estimate values for scientific and engineering functions by using iterative techniques.

Use the Newton-Raphson method correct to 4 d.p. to find the roots of the following equation.

t2 e3t = 25

Task 5: Represent force systems, motion parameters and wave forms as vectors and find out required engineering parameters using analytical and graphical methods.

A) 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 40o east of north. Using analytical and graphical methods:

a) Represent the aircraft motion as vectors.
b) Find out the direction and the speed of the winds.

B) Find out 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.

949_resultant force.jpg

Task 6: Represent linear vector equations in matrix form and solve the system of linear equations by using Gaussian elimination.

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

2i1 – i2 + i3 = -2
i1 + 2 i2 + 3 i3 = -1
2i1+ 2 i2 - i3 = 8

Task 7: Use vector geometry to model and solve appropriate engineering problems

A force of magnitude 3 unit’s acts at the point with coordinates (1, 2, 3). The force is applied in the direction of the vector.  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.:- M91003

Have any Question? 


Related Questions in Electrical & Electronics

1 we discuss the use of sip in this chapter for audio is

1. We discuss the use of SIP in this chapter for audio. Is there any drawback to prevent using it for video? 2. Assume two parties need to establish IP telephony using the service of RTP. How can they define the two ephe ...

1 briefly outline the procedure involved in the successive

1. Briefly outline the procedure involved in the successive solution of Maxwell's equations. 2. How does the technique of successive solution of Maxwell's equations reveal the interaction between the electric and magneti ...

A sinusoid cosomega0t is a bandpass signal with zero

A sinusoid cos(ω0t) is a bandpass signal with zero bandwidth. This implies that the sampling rate that will allow reconstruction of this signal from its samples can be arbitrarily small. Show that this is indeed the case ...

What should be the spacing and the relative phase angle of

What should be the spacing and the relative phase angle of the current densities for an array of two infinite, plane, parallel current sheets of uniform densities, equal in magnitude, to confine their radiation to the re ...

1 define the radiation resistance of an antenna2 why is the

1. Define the radiation resistance of an antenna. 2. Why is the expression for the radiation resistance of a Hertzian dipole not valid for a linear antenna of any length? 3. Explain why power lines are not effective radi ...

A line assumed to be infinitely long and of unknown

A line assumed to be infinitely long and of unknown characteristic impedance when connected to a line of characteristic impedance 50 Ω produces a standing wave ratio of value 2 in the 50-Ω line. The same line when connec ...

1 discuss the evolution of the half-wave dipole from an

1. Discuss the evolution of the half-wave dipole from an open-circuited transmission line. 2. Justify the approximations involved in evaluating the integrals in the determination of the radiation fields due to the half-w ...

1 state amperes circuital law2 what are the units of the

1. State Ampere's circuital law. 2. What are the units of the magnetic field intensity vector? 3. What are the units of the displacement flux density vector? 4. What is displacement current? Give an example involving dis ...

1 why is it that the distances r1 and r2 in the phase

1. Why is it that the distances r 1 and r 2 in the phase factors in equations (8.47a) and (8.47b) cannot be set equal to r, but the same quantities in the amplitude factors can be set equal to r? 2. What is an array fact ...

1 explain why private-public keys cannot be used in

1. Explain why private-public keys cannot be used in creating a MAC. 2. The nonce in Figure 31.22 is to prevent a replay of the third message. Eve cannot replay the third message and pretend that it is a new request from ...

  • 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

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

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