Electrical and Electronic Principles4电力电子课业

Pingdingshan Industrial College of
Technology
BTEC HND in Electrical/Electronic Engineering

Unit 5: Electrical and Electronic Principles

Assignment
Name of Student
Unit Title Unit 5: Electrical and Electronic Principles
Assignment Title the Basic Knowledge of Circuit theory
Assignment No Assignment 1
Name of Tutor
Name of Internal Verifier
Submission Deadline

Outcomes and Assessment Criteria
Outcome Assessment Criteria Feedback Tutor’s decision
1 Investigate circuit
theory
calculate the parameters of ac equivalent circuits using transformation theorems 1a

apply circuit theory techniques to the solution of ac circuit problems 1b
analyse the operation of magnetically coupled circuits 1c
use circuit theory to solve problems relating to series and parallel R-L-C tuned circuits communication systems 1d
Merit Grade Criteria
Merit Descriptors Indicative Characteristics Feedback Tutor’s decision

M1 Identify and
apply strategies to
find appropriate
solutions

Solving circuit parameters
(current, voltage,
resistance) using
appropriate approach

M1

M2 Select, design
and apply
appropriate
methods and
techniques

Transformer parameters
calculation;
Solving the equivalent
inductance.

M2

M3 Present and
communicate
appropriate
findings

Using the right method to
analyse the R-L-C tuned
circuits;
technical language has
been accurately used
during analysis.

M3

Distinction Grade Criteria
Distinction Descriptors Indicative Characteristics Feedback Tutor’s decision

D1 Use critical
reflection to
evaluate own work
and justify valid
conclusions

Conclusions have been arrived at through synthesis of ideas and have been justified during solving circuit parameters. D1

D2 Take
responsibility for
managing and
organising
activities

Independence has been demonstrated; Can complete the task by Unity and cooperation D2

D3 Demonstrate
creative thinking
Effective thinking has taken place in unfamiliar contexts(R-L-C circuit) D3

Internal verification of assignment brief (final agreed version)
IV name Date

I confirm that this is all my own work Student signature
Professor’s summative feedback and comments
Signature Date
Student’s comments on professor’s feedback

Signature Date
ANSWER ALL TASKS
Scenario:

You are working in an company,You should complete the following
work:

Task 1:
i) Use Thevenin’s theorem to find the equivalent impedance of circuit shown
in Fig. 1
ii) Find the maximum power transfer for the circuit shown in Fig.1
(1a)1(1b)
232562030V

R
L

Fig. 1
Etc
Task 2:
An ideal transformer,connected to a 240V mains,supplies a 10V,150W
lamp.Calculate the transformer turns ratio and the current from the supply.
1(c)

Etc
Task 3:
A coil of inductance 0.12H and resistance 3k is connected in parallel

with a 0.02F capacitor and is supplied at 40V at a frequency of 5
kHz.Determine (a) the current in the coil,(b)the circuit impedance and (c) the
power consumed shown in Fig. 2
(1d)

0.02
F

k
3
0.12H

40V, 50kHz
Fig.2

Etc
General Notes to students:
· Complete the cover sheet and sign the statement of authenticity.
· Take great care that if you use other people’s work or ideas in your
assignment, you properly reference them in your text and any bibliography.
(If you are caught plagiarising, you could have your grade reduced to zero, or
at worst, you could be excluded from the course)

Added Notes:
· The deadline for submitting assignment is 7/11/2011, 4 PM at Teaching
Office of 0201. Return date for marked work: 14/11/2011
· Limit the body of the assessment to around 1000 words.
Answer
Task 1:

Task 2:

Task 3: