Spring 2020: There will be 5 Lab Experiments: The Electromechanical Devices Laboratory is located in McLoed 130.
Please attend the laboratory according to your Lab Section and the corresponding Schedule
It is your responsibility to read all required materials and be
ready for each Lab Experiment. Lab Manual will be distributed through the UBC
Bookstore.
Students are responsible for preparing to each Lab Experiment. The TA will check your preparedness by asking questions and reviewing your pre-lab notes.
Failing to be prepared for the lab will result in reducing the mark for that lab by 20%.
Please print and read the general Safety Rules.
You will be asked questions or tested about the Safety Rules in this
laboratory, and you will not be permitted to proceed if you failed to know the
Safety Rules!
1. General Information and Laboratory Rules
Laboratory experiments are an integral part
of many courses that cover electromechanical energy conversion devices and
their applications. To make laboratory experiments safe and effective, the
following rules must be obeyed by all students:
1.1. Safety Rules
a) All domestic and international students are
required to have adequate medical insurance that covers any possible injuries
that may occur while in the Laboratory.
b) Students must work in groups and are not
permitted to conduct experiments in this Laboratory on their own time without
being supervised or accompanied by a TA or Lab Engineer responsible for the
lab.
c) Prior to conducting any measurements, all
students starting the lab sessions in MCLD 130 have to be familiarized with
these Safety Rules and acknowledge
this by their signature in the Sign-up
Sheet. The course Instructor or TAs
are responsible for providing the Sign-up Sheet.
d) Your safety is of the most importance. High
voltage equipment in the power lab can
cause serious injuries or death. For
increased safety, the normal laboratory experiments should be conducted using
reduced voltages not exceeding 50 Volts
DC or AC.
e)
Always double-check your wiring
circuit. Avoid short circuits and/or inappropriate use of equipment. The power supplies
in the lab are capable of delivering very
high current. High current can lead to fire, heat hazards, explosions,
etc., and result in injury and damage to equipment.
f)
Have your circuit checked by a
TA and/or Lab Engineer whenever necessary, especially if you are not sure
and/or getting suspicious results or measurements.
g) The laboratory includes rotating machines
and moving actuators that are capable of delivering high speed, torque and
force. Moving mechanical objects can
cause serious injuries and damage to equipment.
h) To avoid hazardous situations, always cover the dynamometer machine with the
protective plastic cover, tightly couple
and secure the subject electrical machine or device (motor or actuator)
under study with special screws.
i)
Never stick your hands or any other objects near the moving parts (shafts, couplings,
etc.) of the machine while operating.
j) Wear appropriate clothing and hair style
that is not likely to get in the way of rotating machinery and moving
parts!
k)
Report any malfunction and/or
failure of equipment to the TA and the Lab Engineer responsible for the lab.
l)
In the case of accident,
immediately notify the TA and/or Lab Engineer responsible for the lab, your
fellow students/partners, and seek immediate appropriate medical help. In the case of emergency, call 911.
m)
No food and/or beverages are allowed in the laboratory at any
time.
n)
Students carry full
responsibility for any consequences, injuries and/or damages caused by (or as
consequence of) their negligence and/or inappropriate behavior in the
laboratory, or any other violation of the safety rules and precautions.
1.2. Attendance
a)
All students are required to
attend and perform adequately. In order to pass this course, each student (group of students who are
partners) is (are) required to write reports for all experiments.
b)
Attendance will be recorded by
a TA. A Sign-up Sheet will be
provided at the beginning and at the
end of every lab session.
i) In
the beginning of each lab,
each student must Sign-In in the
appropriate Sign-up Sheet for that section, thereby acknowledging his/her
presence and compliance with the above Safety
Rules.
ii) Upon completing the experiment, each student will have to clean up the
work place and return the equipment and wires back to their original place.
After the bench is checked by a TA, each student will have to Sign-Out.
c)
Failure to be present for an
experiment will result in losing the entire mark for the corresponding lab.
d)
Students must not attend a
different lab group/section from the one assigned at the beginning of the
class, unless otherwise approved by the instructor. Attendance in the wrong
group will be subject to a reduced lab mark of up to 50%.
e)
If a student misses a lab
session due to illness and/or family crisis and can provide a legitimate proof,
he/she may be able to attend a different lab section or a make-up session. In
such cases the student should contact the instructor as soon as possible and
make appropriate arrangements/agreements about performing the lab at another
time.
1.3. Preparation and Performance
a)
Before coming to the
laboratory, each student must read and
review the appropriate sections of the lecture notes, textbook chapters, as well as the Lab Manual for the current
Lab Experiment. In particular, each student must read the Tasks and
perform all necessary preparation (Pre-Lab)
tasks corresponding to the Lab Experiment that is to be performed at that day.
b)
The TA will check your
preparedness and the Pre-Lab sheet and may reduce your mark by up to 40% or even dismiss you from the lab if
you are not ready to do the experiments.
c)
Record your own observations and calculations. The time
for the lab is limited and you should use it very effectively to complete all
the tasks and measurements. Be sure to record and present all your data very
clearly.
d) The TA may reduce your lab mark by as much
as 50% if you are noted to be busy
with unrelated activities and/or disruptive to other students.
e)
The TAs may not let you Sign-Out before your work bench is
properly cleared. Leaving the lab without Sign-Out
will invalidate your present lab and you will have to repeat it.
1.4. Accessing the Lab Computer (PC)
a)
You will need to login into the
PC on your Lab Bench to use the Labview program required in every lab. You
should login using your own ECE account,
not the CWL account. Ask your TA for help if you don’t know how to get one.
For information on how to obtain an account in ECE, please see the instructions
on the web:
https://help.ece.ubc.ca/How_To_Get_An_Account
b)
After completing the
experiment, store all your data files into your
personal USB flesh drive, or email it to yourself from the lab computer. Do not save anything on the desktop as
files might get removed after reboot.
1.5. Lab Reports
1.5.1.
Preparing the Report
a) In order to pass this course, each group of
students are required to complete measurements and write Lab Reports for all experiments.
b)
The calculations can be quite
challenging. The students are encouraged to use advanced computational tools
such as Matlab, Excel, etc. for calculations and plotting the results.
c)
Students are encouraged to
discuss among themselves the problems in each lab experiment. However, the
turned-in Lab Reports must show the individual work and reflect the individual
understanding of material by each student (or the group of students). The
percent participation (%) of each student should be clearly indicated on the
title page. Each student must sign the title page certifying that he/she
participated in taking the measurements and preparing a given report.
d)
Reports suspected of cheating will not be graded. Cheating will result in zero mark (0) and may qualify for
withdrawal from the course and/or suspension from the University. Please see
the UBC
Regulation on Cheating and Plagiarism. All instances of cheating will be
reported according to this policy.
e)
All reports must be typed. No
exceptions.
f) The Lab report must contain at
least the following:
1. Title
Page (see sample Title Page below)
2. Pre-Lab (if any), signed and dated by one of the TAs.
3. Pages with measured data. The tables of measurements are included in the
manual for most of the experiments. These pages with tables must contain your
own measurements/calculations and be signed/dated by your TA.
4. For
each task, include necessary diagrams, tables of measurements, figures, graphs,
equations, calculations, notes, etc.
5. Calculations & Analysis: include appropriate equations, calculations,
comments and observations. Summarize the parameters of the studied device in a
Table.
6. Summary Section: This section should include answers to the
additional questions (if any). Here, you should also briefly state and
summarize what you have learned doing the experiments and subsequent
calculations.
g) When preparing a report, you may
cross-reference presentation of data and/or observations to the Task number in
the Manual (e.g., Task #, etc.).
h) It is the best in terms of your time management
if you start and finish your Lab Report
in the same day or soon after you do the experiment, while your memory is fresh
and you are on top of the material. Delaying writing the Lab Report till the due date is likely to result in taking more of
your time.
1.5.2.
Submitting your Lab Report
a)
Reports are due exactly one (1) week after completion of the
experiment. The collection of reports will be specified by the course
instructor. For example, the students may be required to bring them to class/lecture
at a particular day. Alternatively, the reports may be dropped in the Box with
the label ELEC 342/343/344 located
on the first floor in the hallway of MCLD building (close to Room 112B). If
this is the case, the TAs will be picking them up only once at 4:00 PM that
day. In any case, your course instructor will very clearly state the turning-in
procedure.
b)
All late reports must be given directly (personally) to the TA who will record the time and date of submission. Late
submission will result in reduced marks (10%/day). Lab reports submitted more
than three days (including holidays)
after the due date will be accepted with
zero (0) mark.
c)
The following page is an
example of the cover/title page of your reports.
This is an
example for the cover page
ELEC ___
Lab Experiment: ___
Section: ___
Bench #: ___
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Partners |
Student ID #: |
% participation |
Signatures |
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T. Edison |
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M. Faraday |
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Date Performed:
Date Submitted: