Mechanics level 1

Summary question
Cut and join sheet metals
I, True/False Questions
1. Safety goggles are optional when cutting sheet metal.

2. A scribe is used to mark measurements on sheet metal.

3. Tin snips are used for cutting thick steel plates.

4. Riveting is a permanent joining method for sheet metal.

5. A file can be used to smooth rough edges after cutting sheet metal.

6. Plasma cutting is only suitable for non-ferrous metals.

7. Cleaning the workspace is part of quality assurance.

8. A protractor is used to measure the thickness of sheet metal.

9. Spot welding is a temporary joining method.

10. A debarring tool is used to remove sharp edges after cutting.

II, Multiple-Choice Questions

1. Which tool is used to cut straight lines on sheet metal?

a) Tin snips

b) Chisel

c) Hacksaw

d) Plasma cutter

2. What is the purpose of a cleco fastener?

a) To permanently join sheet metal

b) To temporarily hold sheet metal pieces together

c) To cut sheet metal

d) To measure sheet metal thickness

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3. Which of the following is a non-permanent joining method?

a) Riveting

b) Welding

c) Bolting

d) Soldering

4. What is the first step in planning sheet metal work?

a) Cutting the metal

b) Marking measurements

c) Cleaning the workspace

d) Selecting the appropriate tools

5. Which tool is used to create holes in sheet metal?

a) File

b) Drill

c) Chisel

d) Scribe

6. What is the purpose of a deburring tool?

a) To measure sheet metal thickness

b) To remove sharp edges

c) To join sheet metal

d) To mark measurements

7. Which of the following is a quality assurance step?

a) Cutting the metal

b) Inspecting the finished product

c) Cleaning the workspace

d) Marking measurements

8. What is the best tool for cutting curves in sheet metal?

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 a) Hacksaw

b) Tin snips

c) Plasma cutter

d) Chisel

9. Which of the following is a permanent joining method?

a) Bolting

b) Riveting

c) Cleco fasteners

d) Clamping

10. What is the purpose of a scribe?

a) To cut sheet metal

b) To mark measurements

c) To join sheet metal

d) To smooth edges

11. Which of the following is a safety precaution when cutting sheet metal?

a) Wearing gloves

b) Using a dull blade

c) Working in a cluttered area

d) Avoiding safety goggles

12. What is the purpose of a file in sheet metal work?

a) To measure thickness

b) To smooth rough edges

c) To join sheet metal

d) To mark measurements

13. Which of the following is a type of tin snip?

a) Straight-cut

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 b) Curved-cut

c) Left-cut

d) All of the above

14. What is the purpose of a protractor in sheet metal work?

a) To measure angles

b) To measure thickness

c) To cut sheet metal

d) To join sheet metal

15. Which of the following is a type of welding used in sheet metal work?

a) Spot welding

b) MIG welding

c) TIG welding

d) All of the above

16. What is the purpose of a chisel in sheet metal work?

a) To cut sheet metal

b) To mark measurements

c) To smooth edges

d) To join sheet metal

17. Which of the following is a step in quality assurance?

a) Inspecting the finished product

b) Cleaning the workspace

c) Cutting the metal

d) Marking measurements

18. What is the purpose of a plasma cutter?

a) To measure thickness

b) To cut sheet metal

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 c) To join sheet metal

d) To smooth edges

19. Which of the following is a temporary joining method?

a) Riveting

b) Welding

c) Bolting

d) Soldering

20. What is the purpose of a hacksaw in sheet metal work?

a) To cut straight lines

b) To cut curves

c) To join sheet metal

d) To smooth edges

III, Matching Questions L1

Match the following terms with their definitions:

Match the tool with its purpose:

1. Scribe a) To mark measurements

2. Tin snips b) To cut curves

3. File c) To smooth rough edges

4. Rivet gun d) To permanently join sheet metal

5. Plasma cutter e) To cut thick metal

6. Deburring tool f) To remove sharp edges

7. Cleco fastener g) To temporarily hold sheet metal

8. Protractor h) To measure angles

9. Hacksaw i) To cut straight lines

10. Chisel j) To cut sheet metal

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IV, Short Discussion Questions

1. Explain the importance of planning and preparing work before cutting and joining sheet
metal.

2. Describe the steps involved in cutting sheet metal using tin snips.

3. What are the safety precautions to take when using a plasma cutter?

4. Explain the difference between permanent and temporary joining methods in sheet metal
work.

5. How do you ensure quality assurance in sheet metal work?

6. Describe the purpose of a deburring tool and how it is used.

7. Explain the role of a cleco fastener in sheet metal work.

8. What are the advantages of using a rivet gun for joining sheet metal?

9. How do you measure and mark sheet metal accurately before cutting?

10. Explain the importance of cleaning up after completing sheet metal work

V. Fill in the Blanks

1. A ________ is used to mark measurements on sheet metal.

2. ________ are used to cut curves in sheet metal.

3. A ________ is used to permanently join sheet metal.

4. The process of removing sharp edges after cutting is called.

5. A ________ is used to measure angles in sheet metal work.

6. ________ is a temporary joining method for sheet metal.

7. A ________ is used to cut straight lines in sheet metal.

8. ________ is a type of welding used in sheet metal work.

9. The ________ tool is used to smooth rough edges after cutting.

10. ________ is the final step in quality assurance.

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 Answer key for Cut and join sheet metals

I, True or false answer

1. false
2. true
3. False
4. true
5. true
6. False
7. True
8. false
9. False
10. True
II, Multiple choice answer
1. C
2. B
3. C
4. D
5. B
6. B
7. B
8. B
9. B
10. B
11. A
12. B
13. D
14. A
15. D
16. A
17. A
18. B
19. C
20. A
III, Matching answer

1. a) To mark measurements

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2. b) To cut curves

3. c) To smooth rough edges

4. d) To permanently join sheet metal

5. e) To cut thick metal

6. f) To remove sharp edges

7. g) To temporarily hold sheet metal

8. h) To measure angles

9. i) To cut straight lines

10. j) To cut sheet metal

IV, Fill the blank space

1. scribe
2. Tin snips
3. Rivet gun
4. Deburring
5. Protractor
6. Bolting
7. hacksaw
8. Spot welding
9. File
10. inspection

V, Short discussion answer

1. Importance of planning and preparing work before cutting and joining sheet metal:
- Planning ensures accuracy, reduces waste, and improves safety. Proper preparation helps in
achieving precise cuts and joins, which are crucial for the structural integrity and appearance of
the final product.

2. Steps involved in cutting sheet metal using tin snips:

- Measure and mark the cutting line on the sheet metal.
- Secure the sheet metal to prevent movement.

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 - Use the appropriate type of tin snips (straight-cut, left-cut, or right-cut) for the job.
- Make steady cuts along the marked line, applying even pressure.

3. Safety precautions when using a plasma cutter:

- Wear appropriate personal protective equipment (PPE) such as gloves, goggles, and flame-
resistant clothing.
- Ensure proper ventilation to avoid inhaling fumes.
- Keep the work area clear of flammable materials.
- Follow the manufacturer's instructions and safety guidelines.

4. Difference between permanent and temporary joining methods in sheet metal work:
- Permanent joining methods, such as welding or riveting, create a strong, lasting bond.
Temporary methods, like using screws or clamps, allow for disassembly and reassembly.

5. Ensuring quality assurance in sheet metal work:

- Follow detailed plans and specifications.
- Use precise measuring and marking tools.
- Regularly inspect work for accuracy and defects.
- Adhere to industry standards and best practices.

6. Purpose of a deburring tool and how it is used:

- A deburring tool removes sharp edges and burrs from cut metal to prevent injury and ensure a
smooth finish. It is used by running the tool along the edges of the metal to shave off any rough
spots.

7. Role of a cleco fastener in sheet metal work:

- Cleco fasteners are temporary fasteners used to hold sheet metal pieces together before
permanent fastening. They allow for easy alignment and adjustment.

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8. Advantages of using a rivet gun for joining sheet metal:
- Rivet guns provide a strong, permanent join.
- They are relatively easy to use and require minimal equipment.
- Riveting is suitable for a variety of materials and thicknesses.

9. Measuring and marking sheet metal accurately before cutting:

- Use precise measuring tools like calipers or rulers.
- Mark the metal with a scribe or marker, ensuring lines are straight and clear.
- Double-check measurements before cutting.

10. Importance of cleaning up after completing sheet metal work:

- Cleaning up prevents accidents and maintains a safe work environment.
- It helps in preserving tools and equipment.
- Proper disposal of metal scraps and waste materials is essential for environmental safety.

These answers provide a basic overview of the topics covered in this unit of competency.

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