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

Outcomes and Assessment Criteria

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)

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 3Ω

k is connected in parallel with a 0.02F

μcapacitor 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)

Fig.2

Etc

General Notes to students:

·Complete the cover sheet and sign the statement of authenticity.

·Take great care t hat 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: