VCE VET Engineering Studies Written examination – End of year Overall conditions

Transcription

VCE VET Engineering Studies
Written examination – End of year
Examination specifications
Overall conditions
The examination will be sat at a time and date to be set annually by the Victorian Curriculum and Assessment
Authority (VCAA). VCAA examination rules will apply. Details of these rules are published annually in the
VCE and VCAL Administrative Handbook.
There will be 15 minutes reading time and 1 hour and 30 minutes writing time.
The examination will be marked by a panel appointed by the VCAA.
The examination will contribute 34 per cent to the study score.
Content
The VCE VET Engineering Studies examination will be based on the five compulsory units of competency
from Units 3 and 4.
MEM12024A
Perform computations
Release 1 30 hours
MSAENV272B Participate in environmentally sustainable work practices
Release 1 30 hours
VU20910
Produce basic engineering sketches and drawings
20 hours
VU20911
Handle engineering materials
20 hours
MSS402040A Apply 5S procedures in a manufacturing environment
Release 1 40 hours
The examination will focus on the essential knowledge and an understanding of the essential skills as
outlined in the elements and performance criteria of the relevant units of competency. Individual questions
may assess more than one unit of competency. The electives will not be examined.
Format
The examination will be in the form of a question and answer book.
The examination will consist of two sections.
Section A will consist of 20 multiple-choice questions worth 1 mark each and will be worth a total of
20 marks.
Section B will consist of short-answer and multiple-part questions, including calculations and sketches.
Short scenarios and stimulus material may be provided. This section will be worth 80 marks.
All units of competency will be examined in both sections of the examination.
All questions will be compulsory. The total marks for the examination will be 100.
Answers to Section A are to be recorded on the answer sheet provided for multiple-choice questions.
Answers to Section B are to be recorded in the spaces provided in the question and answer book.
© VICTORIAN CURRICULUM AND ASSESSMENT AUTHORITY 2014
May 2014
Relevant references
The following publications should be referred to in relation to the VCE VET Engineering Studies
examination:
• VCE VET Engineering Studies Program Booklet (published November 2012)
• VCE VET Engineering Studies Assessment Guide (published February 2010)
• VCE VET Engineering Studies page on the VCAA website
Advice
The following sample examination demonstrates changes to the examination format and to the types of
questions that may be asked on the examination. Teachers and students should pay particular attention to
questions that relate to the units of competency MEM12024A Perform computations, MSAENV272B
Participate in environmentally sustainable work practices and MSS402040A Apply 5S procedures in
a manufacturing environment. Past examination papers are a useful reference for examples of questions
related to VU20910 Produce basic engineering sketches and drawings and VU20911 Handle engineering
materials.
As examination questions may be based on more than one unit of competency, questions will not be
presented under unit headings.
Answers to multiple-choice questions are provided on page 20.
Answers to other questions are not provided.
VCE VET Engineering Studies (Specifications and sample) – May 2014
2
SUPERVISOR TO ATTACH PROCESSING LABEL HERE
Victorian Certificate of Education
Year
Letter
STUDENT NUMBER
VCE VET ENGINEERING STUDIES
Written examination
Day Date
Reading time: *.** to *.** (15 minutes)
Writing time: *.** to *.** (1 hour 30 minutes)
E
L
QUESTION AND ANSWER BOOK
P
Structure of book
Section
A
B
S
M
A
Number of
questions
Number of questions
to be answered
20
19
20
19
Number of
marks
20
80
Total 100
• Students are permitted to bring into the examination room: pens, pencils, highlighters, erasers,
sharpeners, rulers, a protractor, a set square and aids for curve sketching.
• Students are NOT permitted to bring into the examination room: blank sheets of paper and/or white
out liquid/tape.
• A scientific calculator is allowed in this examination.
Materials supplied
• Question and answer book of 19 pages.
• Answer sheet for multiple-choice questions.
Instructions
• Write your student number in the space provided above on this page.
• Check that your name and student number as printed on your answer sheet for multiple-choice
questions are correct, and sign your name in the space provided to verify this.
• All written responses must be in English.
At the end of the examination
• Place the answer sheet for multiple-choice questions inside the front cover of this book.
Students are NOT permitted to bring mobile phones and/or any other unauthorised electronic
devices into the examination room.
© VICTORIAN CURRICULUM AND ASSESSMENT AUTHORITY 2014
May 2014
VCE VET ENGINEERING STUDIES EXAM (SAMPLE)
2
May 2014
SECTION A – Multiple-choice questions
Instructions for Section A
Answer all questions in pencil on the answer sheet provided for multiple-choice questions.
Choose the response that is correct or that best answers the question.
A correct answer scores 1, an incorrect answer scores 0.
Marks will not be deducted for incorrect answers.
No marks will be given if more than one answer is completed for any question.
Question 1
A technical drawing specifies that 100 machine parts are to be produced to a diameter of 50 mm +/– 0.1 mm.
A random sample of five machine parts was inspected for quality control. The results are shown in the table
below.
Machine part
number
Diameter
(mm)
1
50.05
2
50.15
3
49.90
4
49.85
5
50.10
The parts from the sample that would pass the inspection are
A. 1, 2, 3
B. 2, 3, 4
C. 2, 4, 5
D. 1, 3, 5
Question 2
You are working in an engineering workshop. Towards the end of your shift, you observe another worker
disposing of old machine oil directly into the gutter in the street.
This method of disposal is incorrect as the used machine oil
A. should have been poured directly into a drain instead.
B. should not be emptied into the gutter until it rains.
C. is an environmental hazard and should be stored in a waste container.
D. must first have water added to it, then it can be poured into the gutter.
Question 3
Which of the following lists the correct order for the steps to be followed under the 5S procedures?
A. Sort, Set in order, Shine, Standardise, Sustain
B. Sort, Set in order, Standardise, Sustain, Shine
C. Set in order, Standardise, Shine, Sort, Sustain
D. Shine, Set in order, Sort, Sustain, Standardise
SECTION A – continued
May 2014
3
Question 4
The diagram above shows a view of a machine part.
This view is best described as
A. isometric.
B. geometric.
C. orthogonal.
D. parametric.
Question 5
In most workplaces, employees must wear PPE.
What does PPE stand for?
A. proper protective equipment
B. proactive personal equipment
C. personal protective equipment
D. protective plasticised equipment
Question 6
The edges of a cast iron block weighing 32 kg were rounded off with a mill. When the block was reweighed,
it was found to weigh only 29.5 kg.
What percentage of the original cast iron block was lost?
A. 8.5%
B. 7.8%
C. 3.4%
D. 2.5%
Question 7
If 3.5 L of used brake fluid were to be disposed of each week over a three-year period, the total number of
litres disposed of at the end of this time, assuming there are 52 weeks in a year, would be
A. 182 L
B. 495 L
C. 546 L
D. 654 L
TURN OVER
4
May 2014
Question 8
The most important reason to clean the area in a workshop and ensure that everything is restored to the
correct place at the end of a shift is to
A. assist the cleaner.
B. finish work earlier.
C. impress the supervisor.
D. ensure the workshop and tools are ready for the next user.
Question 9
The symbol shown above represents a
A. knurl.
B. thread.
C. radius.
D. third angle.
Question 10
A sling has a tag with ‘SWL 250 kg’ on it.
What does ‘SWL 250 kg’ mean?
A. safe weight line of 250 kg
B. safe working load of 250 kg
C. sample weight load of 250 kg
D. sample working line of 250 kg
Question 11
A length of copper pipe measures 15.3 m. According to a job’s specifications, the pipe needs to be cut into
3.2-m-long pieces.
How many 3.2-m-long pieces of pipe can be cut from the original 15.3-m-long copper pipe?
A. one
B. two
C. three
D. four
Question 12
You observe a worker emptying used degreaser cleaning fluid into the sink in a workshop.
What should you do?
A. Refer the worker to the company policy manual.
B. Notify your immediate supervisor of the hazard the next day.
C. Advise the worker that it is an occupational health and safety hazard.
D. Ignore the situation as there is nothing wrong with this disposal method.
May 2014
5
Question 13
The main reason for having an ordered work area is that
A. tools cannot be moved.
B. it provides security for equipment.
C. it is more obvious when a tool is missing.
D. it provides a more attractive work environment.
Use the following information to answer Questions 14 and 15.
The diagram below shows a plate with a hole and four shafts, A to D, on the right-hand side. The shafts have
different tolerances, which will result in different fits.
+ 0.2
Ø 18 – 0.1
– 0.1
Ø 18 – 0.2
Ø 18 +– 0.1
0
+ 0.2
Ø 18 + 0.3
+ 0.1
Ø 18 + 0.3
A
B
C
D
Question 14
What is the minimum size allowed for the hole shown in the diagram above?
A. 18.0
B. 18.1
C. 18.2
D. 18.3
Question 15
Which shaft in the diagram above will always be a loose fit in the hole?
A. shaft A
B. shaft B
C. shaft C
D. shaft D
TURN OVER
6
May 2014
Question 16
A motor has an input of 3500 W.
If the quoted efficiency is 98%, what is the expected output?
A. 2910 W
B. 3092 W
C. 3430 W
D. 3498 W
Question 17
The air filter on an industrial vacuum cleaning machine needs to be replaced at least once each week.
What would be the expected environmental impact of not replacing the air filter for a month?
A. The machine would become noisy and need more power to operate.
B. The machine would require more air filters and cost more to operate.
C. The machine would clog up with dust and stop working after a week.
D. The machine would not function properly and would need to be replaced immediately.
Question 18
5S is a methodology that
A. focuses on creating workplace organisation and standard work.
B. provides a set of rules to encourage workplace safety.
C. provides guidelines for equipment maintenance.
D. ensures all employees are treated fairly.
Question 19
1.
2.
3.
4.
Four commonly used lifting aids are shown above. They are not to scale.
The most suitable lifting aid to move a pallet of boxes from the workshop to the warehouse would be
A. 1.
B. 2.
C. 3.
D. 4.
May 2014
7
Question 20
FLAMMABLE
LIQUID
3
One precaution that needs to be followed in a work area displaying the sign shown above is
A. wear a leather apron.
B. avoid using solvents.
C. wear rubber gloves.
D. prohibit welding.
END OF SECTION A
TURN OVER
8
May 2014
SECTION B
Instructions for Section B
Answer all questions in the spaces provided. All dimensions are in millimetres (mm).
Question 1 (1 mark)
Name a mechanical device suitable for moving an oxygen cylinder from a workshop.
Question 2 (2 marks)
Suggest two ways in which 5S procedures can help to reduce errors and injuries in an engineering
workshop.
1.
2.
Auditing on a regular basis is a method used in the Sustain step of the 5S procedures.
What could happen to the 5S system if the Sustain step is omitted?
a. A sheet metal worker has a box containing 1500 × 20 mm Hex head Tek screws.
b.
If he uses 168 screws each week for four weeks, calculate how many he will be left with.
Show your working.
2 marks
If the box containing 1500 × 20 mm Hex head Tek screws costs $234.90, plus 10% for GST,
how much would it cost him each week to purchase the screws? Show your working.
3 marks
SECTION B – continued
May 2014
9
The supervisor has asked an employee to check that everything has been switched off in the staff
change room before going home. The employee observes that there are a number of items to be
attended to:
• A cold tap on one of the wash basins is dripping.
• The fluorescent lights have been left on.
• One of the hot showers is running.
• The fan above the showers is still on.
a.
Which item should be turned off first? Justify your answer.
2 marks
b.
Which item should be turned off last? Justify your answer.
2 marks
c.
If a hot tap was left dripping into a washbasin for a fortnight, what impact would this be likely
to have on the workshop’s energy use over the last month? Explain your answer.
3 marks
5S procedures are recognised by the industry as one of the tools for improving performance. Under
this system, it is required that the work area is set up in preparation for the day’s work.
a.
Describe what should be done during the first step of setting up.
2 marks
b.
Explain how using a system such as 5S can improve performance in an engineering
workshop.
3 marks
TURN OVER
10
May 2014
The table below lists some line types and their typical applications in engineering drawings. Two rows have
been completed as examples.
Complete the table below using the following list (each dot-pointed item can be used only once in the table):
• hidden outlines
• continuous – thick
• chain – thin
• cutting planes
Line type
Typical applications
visible outlines, general details, existing buildings
continuous – thin
dimension lines, projection lines, leader lines, hatching,
outlines of revolved sections, fold lines, short centre lines
continuous – thin, ruled with zigzag
break lines – other than on an axis
dashed – thin
centre lines, pitch lines, path lines indicating movement,
features in front of cutting plane, developed views, material to
be removed
chain – thin, thick at ends
Give two examples of dangerous materials that could be found in an engineering workshop, and outline how
each should be stored in a safe and environmentally responsible way.
Dangerous material 1
Storage
Dangerous material 2
Storage
May 2014
11
Figure 1 shows an isometric view of an engineering component.
You are required to sketch two aligned drawings of the object.
a.
b.
Sketch a front view from direction A of the object. Maintain proportion and use the starting
corner guides.
3 marks
Sketch a side view from direction B of the object. Maintain proportion and use the starting
corner guides.
3 marks
15
60
25
15
35
10
25
25
15
10
35
40
10
25
55
B
35
A
Figure 1
Front view
Side view
TURN OVER
12
May 2014
When following the 5S procedures, the Shine step includes ‘keeping the work area clean at all
times’.
a.
Give one example for each of the other 5S steps listed in the table below.
5S step
4 marks
Example
Sustain
Standardise
Sort
Set in order
b.
Explain why it is important to follow the 5S steps in the correct order
3 marks
May 2014
13
Figure 2 shows a steel canister and some components to construct a lid with a rim.
Ø 400 mm
steel disc
steel strip
steel canister
Figure 2
not to scale
The steel canister has a diameter of 400 mm. The lid is to be made with the following
specifications:
• The diameter of the lid needs to be 10 mm wider than the canister to fit over the top of its rim.
• The lid is to be made from a flat steel disc for the top, with a 20 mm wide strip of steel brazed
onto it to form the rim.
• An extra 5 mm should be added to the length of the steel strip to allow for an overlap of 2.5 mm
when the ends are soldered together.
a.
Calculate the circumference of the steel disc required for the lid. Show your working.
circumference = π × diameter, where π = 3.141
3 marks
Diameter of lid
Circumference of lid
b.
Determine the length of the steel strip required to form the rim. Show your working.
3 marks
TURN OVER
14
May 2014
The data in the table below shows the output in kilowatts (kW) of a diesel electric generator
compared to fuel used per hour in litres (L).
Fuel used per hour (L)
(idling)10
a.
Power output (kW)
0
15
190
20
375
30
500
40
605
50
670
60
705
70
720
80
703
90
660
Graph the motor’s output in kilowatts per hour (kWh) on the grid below, using the fuel used
per hour in litres as the horizontal axis.
3 marks
power output
(kWh)
fuel used
per hour
(L)
b.
c.
d.
Using your graph, estimate the amount of fuel consumed in litres per hour when the generator
is providing 650 kW of power.
1 mark
If the motor was using 35 L of fuel per hour, what amount of power would be provided by the
generator?
1 mark
What power output range provides the greatest efficiency of the generator?
1 mark
May 2014
15
Figure 3
a.
What type of lift is shown in Figure 3?
b.
In Figure 3, the person at the front of the picture who is not lifting is the leader of the lift.
1 mark
State one responsibility this person has.
1 mark
c.
Why is it important to have a test lift?
1 mark
d.
How would you size up a load to be lifted?
1 mark
TURN OVER
16
May 2014
Apart from storing dangerous chemicals correctly, what are three practices an engineering
workshop could introduce to reduce its impact on the environment? Give an example for each
practice to indicate how it could be implemented.
Practice 1
Example
Practice 2
Example
Practice 3
Example
a. What does MSDS stand for?
1 mark
b.
Why would you need to refer to an MSDS?
c.
Give two examples of information that could be expected to be contained in an MSDS.
1 mark
2 marks
May 2014
17
When following the 5S Sort step approach, it is important to consider the storage location of items or mobile
equipment, with respect to how frequently they are used.
Item or mobile equipment storage location
A.
B.
C.
D.
E.
workshop
off-site storage
throw out
on-site warehouse
work area
Enter the letters A., B., C., D. or E. in the table below to indicate the most appropriate storage location for
items or mobile equipment with respect to the frequency of use listed below. Each letter can be used only
once.
Frequency of use
Storage location
daily
weekly
monthly
twice a year
never
Back injury is one of the most common occupational health and safety issues in the workplace.
What are the three most important manual handling strategies used to ensure a load is lifted correctly?
Strategy 1
Strategy 2
Strategy 3
TURN OVER
18
May 2014
Figures 4a, 4b and 4c show examples of different types of engineering drawings.
Label each drawing, selecting your answers from the following list:
• assembly drawing
• subassembly drawing
• detailed assembly drawing
• detailed drawing
6
R 25
50
75
5
7
2
1
55
50
20
125
3
38
70
6
70
4
Figure 4b
Figure 4a
80
1
30
Typ
50
2
Typ
30
3
280
250
4
Typ
45°
100
300
5
Typ
Figure 4c
May 2014
19
Figure 5 shows an angle iron bracket with two holes.
Correctly dimension the drawing using the following information:
• The angle iron is 40 × 40 × 150.
• Both holes are Ø 12.
• The holes are 25 mm from one end and 100 mm between centres.
Figure 5
END OF QUESTION AND ANSWER BOOK
Answers to multiple-choice questions
Question
Answer
1
D
2
C
3
A
4
A
5
C
6
B
7
C
8
D
9
B
10
B
11
D
12
C
13
C
14
A
15
B
16
C
17
A
18
A
19
B
20
D
20
May 2014

VCE VET Engineering Studies Written examination – End of year Overall conditions

Transcription

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