You  will  be  required  to  undertake  this  alternative  assessment  in  place  of your  deferred  coursework

component or as reassessment for your failed coursework attempt. Please note, this also includes in class tests which are scheduled within term outside of the examination window.

This alternative assessment for 5CCE2ECM (2022/23 academic year) is designed to replace the outstanding

components below:

Assessment 1 – Quiz (covering Topics 1 and 2)

Assessment 2 – MATLAB/Simulink exercise on three-phase power systems

The alternative assessment consists of two parts, and you are required to complete both – you will find

the questions starting on PAGE 2.

Submission requirements:

Your submission should be maximum of 6 (six) pages and contain your worked solutions and images of any plots you generate. You should use 12pt Calibri (or alternative) sans-serif font with 1.5 line spacing. The page limit includes figures, all plots should have a title, labelled axes and units. Extra pages will not be marked.

The alternative assessment is due to be released on Thursday 29th June.

As clarified in the email sent to students in June (Engineering Assessments Period 3 - August Information, sent 5th June), no extensions will be permitted.

Coursework is due 4pm, Thursday 27th July 2023.

Those with approved KIPS/PAA in place please refer to communications received from the Department    (PAA Information for Engineering Assessments Period 3 - August, sent 6th June) for further information. If you have not received this, then please contact the UG / PGT office as soon as possible.

Submissions will not be accepted after the deadline has passed, please ensure that you leave plenty of      time to check over and upload your work. If you are unable to submit by this deadline, emailengineering- ug@kcl.ac.ukand apply for mitigation as soon as possible. Information on mitigation can be found viaKA- 01744  · Student Services Online (kcl.ac.uk)

Submissions will not be accepted via email; submissions must be made via the correct KEATS area. Further information on the submission area and where to submit can be found via –Course: Engineering Coursework Submissions - August 2023 (kcl.ac.uk).

Support for carrying out this assessment is available:

Please contact Dr Mark Ainslie (mark.ainslie@kcl.ac.uk) via email regarding Part 1 and Dr Grazia Todeschini (grazia.todeschini@kcl.ac.uk) regarding Part 2, before 4pm on Thursday 20 July.

Part 1, Electromagnetism

Question 1 (30 marks)

Three fixed point charges, A, B and C, are located on a two-dimensional (x, y) plane, with a central origin point at (0, 0).

Charge A:         20 mC     at position (– 1 mm, – 1 mm)

Charge B:         – 15 mC                at position (1 mm, 0 mm)

Charge C:         30 mC     at position (0 mm, 2 mm)

a)   Sketch the plane showing each charge, and indicate the direction of the electric field due to each point charge, with respect to a position P (2 mm, 2mm)                                     (6 marks)

b)   Calculate the magnitude and direction of the electric field E at position P (2 mm, 2 mm)        (24 marks)

Question 2 (20 marks)

Consider the wire loop shown in Figure 1a. The length is L = 20 cm and the width is W = 25 cm. The wire is immersed in a magnetic field, and the relevant unit vectors are shown in Figure 1b.

For each one of the conditions below, calculate both magnitude and direction of the induced emf (clockwise, counterclockwise, or ‘none’). You must show your working and/or reasoning.

Note that the field may be a function of space only, of time only, or a function of both time and space.

a)   B = 0.1 [T/m]  yk   (4 marks)

b)   B = 0.5 [T/s]  tk   (4 marks)

c)   B = –0.1 [T/m/s]  ytk   (4 marks)

d)   B = 0.25 [T/m/s]  xtj   (4 marks)

e)   B = 0.05 [T/m/s]  yti   (4 marks)

Part 2, Simulink

Question 3 (50 marks)