Metalworking Occupations Mid-term Exam

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Quizzes Created: 1 | Total Attempts: 169
| Attempts: 169
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  • 1/30 Questions
    Identify the following tool. - ProProfs

    Identify the following tool.

    • Electronic Digital Caliper
    • Electronic edge finder
    • Electronic Indicator
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About This Quiz

This exam covers basic machine shop practices. Content areas are listed below. Measurement Layout Machine Speeds Drilling Screw threads Lathe work Milling

Metalworking Occupations Mid-term Exam - Quiz

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  • 2. 
    Identify the following tool. - ProProfs

    Identify the following tool.

    • Divider

    • Combination Square

    • Height gage

    Correct Answer
    A. Combination Square
    Explanation
    A combination square is a versatile measuring tool that combines multiple functions in one tool. It typically consists of a ruler, a square head, and a center head. The ruler can be used for measuring lengths, while the square head is used for marking and checking 90-degree angles. The center head is used for finding the center of round objects. Overall, a combination square is a useful tool for both measuring and marking tasks in woodworking, metalworking, and other trades.

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  • 3. 
    Identify the tool shown below. - ProProfs

    Identify the tool shown below.

    • Inside micrometer

    • Depth micrometer

    • Indicator micrometeer

    Correct Answer
    A. Depth micrometer
    Explanation
    The tool shown in the image is a depth micrometer. This type of micrometer is specifically designed to measure the depth of holes, slots, or recesses. It consists of a base that rests on the surface being measured and a rod with a measuring face that extends into the hole or recess. The measurement is taken by reading the scale on the barrel of the micrometer, which indicates the depth of the feature being measured.

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  • 4. 
    Identify this tool which is used to scribe circles, arcs, and radii. - ProProfs

    Identify this tool which is used to scribe circles, arcs, and radii.

    • Divider

    • Combination Square

    • Height gage

    Correct Answer
    A. Divider
    Explanation
    A divider is a tool used to scribe circles, arcs, and radii. It consists of two pointed legs joined by a hinge. By adjusting the distance between the legs, the divider can be used to mark out precise measurements and create accurate curves. The sharp points allow for precise marking on various materials, making it a versatile tool for carpentry, metalworking, and other trades.

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  • 5. 

    What is the decimal equivalent of 23/64?

    • .3281

    • .3906

    • .3594

    Correct Answer
    A. .3594
    Explanation
    The decimal equivalent of a fraction is obtained by dividing the numerator by the denominator. In this case, dividing 23 by 64 gives a decimal value of approximately 0.3594.

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  • 6. 

    The lathe operation which cuts along the outside diameter of the workpiece is called _______________ .

    • Turning

    • Surfacing

    • Facing

    Correct Answer
    A. Turning
    Explanation
    Turning is the correct answer because it refers to the lathe operation that cuts along the outside diameter of the workpiece. This operation involves the rotation of the workpiece on its axis while a cutting tool removes material from the outer surface. Turning is commonly used to create cylindrical shapes, such as shafts or cylinders, and to achieve a smooth and precise finish on the workpiece.

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  • 7. 
    Identify this common cutting tool used in a milling machine. - ProProfs

    Identify this common cutting tool used in a milling machine.

    • Indexable carbide insert end mill

    • Two flute end mill

    • Four flute end mill

    Correct Answer
    A. Two flute end mill
    Explanation
    A two flute end mill is a common cutting tool used in a milling machine. It has two cutting edges or flutes that remove material as the mill rotates. This type of end mill is often used for general milling operations and is suitable for cutting softer materials. The two flutes help to provide a good balance between material removal and chip evacuation, resulting in efficient and smooth cutting.

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  • 8. 
    Identify the following tool. - ProProfs

    Identify the following tool.

    • Vernier caliper

    • Depth micrometer

    • Outside micrometer

    Correct Answer
    A. Outside micrometer
    Explanation
    The given tool is an outside micrometer. This tool is used to measure the external dimensions of objects with high accuracy. It consists of a frame, an anvil, a spindle, and a thimble. The anvil is placed against one end of the object being measured, and the spindle is moved towards the other end using the thimble. The measurement is read from the scale on the thimble and the main scale on the frame. The outside micrometer is commonly used in industries such as manufacturing, engineering, and machining.

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  • 9. 
    What is the reading on the outside micrometer shown below? - ProProfs

    What is the reading on the outside micrometer shown below?

    • .244

    • .231

    • .256

    Correct Answer
    A. .256
  • 10. 

    Which tool is used to create a square bottomed hole for the head of a bolt to fit in?

    • Countersink

    • Counterbore

    • Counter balance

    Correct Answer
    A. Counterbore
    Explanation
    A counterbore is a tool that is used to create a square bottomed hole for the head of a bolt to fit in. This tool is specifically designed to enlarge the top portion of a hole, allowing the head of a bolt to sit flush with or below the surface of the material being drilled. It creates a flat-bottomed recess that provides a secure and stable fit for the bolt head, ensuring that it does not protrude or interfere with the surrounding surface. Counterboring is commonly used in woodworking, metalworking, and other industries where bolts need to be securely fastened.

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  • 11. 

    A vertical milling machine has three movements: Vertical (up & down) , longitudinal (left & right), and cross (front to back). Each axis is given a letter to describe it. X, Y, & Z Which letter is assigned to the left and right movement of the table?

    • X axis

    • Y axis

    • Z axis

    Correct Answer
    A. X axis
    Explanation
    The X axis is assigned to the left and right movement of the table in a vertical milling machine.

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  • 12. 

    The precise location of holes can be done on a milling machine by using an ______________ to establish where the edge of the part is.

    • Combination square

    • Edge finder

    • Electronic caliper

    Correct Answer
    A. Edge finder
    Explanation
    An edge finder is a tool used on a milling machine to accurately determine the location of the edge of a part. It works by touching the edge of the part with a probe, which then sends a signal to the machine, indicating the exact position of the edge. This information is crucial for accurately positioning and drilling holes in the part. A combination square and electronic caliper are not specifically designed for this purpose and would not provide the same level of precision in locating the edge of the part.

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  • 13. 

    A small double ended drill used to start a hole is called a

    • Pilot drill

    • Center drill

    • Taper shank drill

    Correct Answer
    A. Center drill
    Explanation
    A center drill is a small double-ended drill that is used to start a hole. It is designed to create a small indentation or pilot hole in the material, which helps to guide the larger drill bit and prevent it from wandering or slipping off center. Center drills are commonly used in metalworking and woodworking applications to ensure accurate and precise hole placement.

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  • 14. 

    When preparing to produce internal threads, a hole which is  __________________ the major diameter of the thread should be drilled first.

    • Slightly larger than

    • Slightly smaller than

    • The same size as

    Correct Answer
    A. Slightly smaller than
    Explanation
    When preparing to produce internal threads, a hole that is slightly smaller than the major diameter of the thread should be drilled first. This is because the internal threads will be formed by tapping or cutting into the hole, and if the hole is the same size or larger than the major diameter, there will be no material left to form the threads. By drilling a hole slightly smaller than the major diameter, there will be enough material for the threads to be formed properly.

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  • 15. 

    The lathe operation which cuts across the end of the workpiece is called ___________ .

    • Turning

    • Surfacing

    • Facing

    Correct Answer
    A. Facing
    Explanation
    Facing is the correct answer because it refers to the lathe operation where the cutting tool moves perpendicular to the axis of rotation of the workpiece, resulting in a smooth and flat surface being created across the end of the workpiece. This operation is commonly used to create a precise and flat surface for mating or joining with another component.

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  • 16. 

    Which of the following tools will produce an internal thread?

    • Tap

    • Die

    • Reamer

    Correct Answer
    A. Tap
    Explanation
    A tap is a tool used to create internal threads in a hole or a nut. It is designed with sharp cutting edges that remove material and form the threads as it is turned into the hole or nut. Therefore, a tap is the correct tool for producing an internal thread. A die, on the other hand, is used to create external threads, while a reamer is used to smooth and enlarge holes, not to create threads.

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  • 17. 

    Which of the following tools would be used for basic hole layout work.

    • Protractor, scriber, & center drill.

    • Edgefinder, scriber, & live center

    • Combination square, scriber,& center punch

    Correct Answer
    A. Combination square, scriber,& center punch
    Explanation
    A combination square is a versatile tool that can be used for measuring and marking angles, as well as checking the accuracy of right angles. A scriber is a sharp-pointed tool used for marking lines on a surface, such as metal or wood. A center punch is used to make a small indentation in a workpiece, which serves as a starting point for drilling or other operations. Therefore, the combination square, scriber, and center punch are the most suitable tools for basic hole layout work.

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  • 18. 

    At what speed (rpm) should a lathe be set at when turning down a 2 inch diameter piece of low carbon steel with a carbide cutter? RPM = Cutting Speed x 4 / Diameter of the workpiece. Available information:
    • Cutting speed for low carbon steel with a carbide tool = 350

    • 700 rpm

    • 350 rpm

    • 1400 rpm

    Correct Answer
    A. 700 rpm
    Explanation
    The formula given for calculating RPM states that RPM is equal to cutting speed multiplied by 4, divided by the diameter of the workpiece. In this case, the cutting speed for low carbon steel with a carbide tool is given as 350. The diameter of the workpiece is 2 inches. Plugging these values into the formula, we get 350 x 4 / 2 = 700. Therefore, the lathe should be set at 700 RPM when turning down a 2 inch diameter piece of low carbon steel with a carbide cutter.

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  • 19. 

    A diamond shaped surface which produces a better grip on handles is produced with a _______________ .

    • Parting tool

    • Reamer

    • Knurling tool

    Correct Answer
    A. Knurling tool
    Explanation
    A knurling tool is used to create a diamond-shaped pattern on a surface, which enhances grip. This tool has a set of hardened wheels with diagonal teeth that press against the workpiece, creating the desired pattern. The diamond-shaped surface produced by the knurling tool provides better traction and grip on handles, making it the correct tool for this purpose.

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  • 20. 

    What is the fractional equivalent of .6250?

    • 1/16

    • 9/16

    • 5/8

    Correct Answer
    A. 5/8
    Explanation
    The fractional equivalent of .6250 is 5/8. This can be determined by recognizing that the decimal .6250 represents 6250/10000, which can be simplified to 5/8 by dividing both the numerator and denominator by 1250.

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  • 21. 

    One methof for cutting a taper or angle on a part in the lathe is to use the ______________ .

    • Compound Rest

    • Head Stock

    • Half Nut Lever

    Correct Answer
    A. Compound Rest
    Explanation
    The compound rest is used for cutting a taper or angle on a part in the lathe. It is a tool that can be adjusted and set at different angles to the workpiece, allowing the cutting tool to be positioned at the desired angle. By adjusting the compound rest, the operator can control the depth and direction of the cut, resulting in a taper or angle on the part.

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  • 22. 

    Drill chucks, live centers, and other taper shank tools are held in the ____________ .

    • Head stock

    • Tail stock

    • Tool post

    Correct Answer
    A. Tail stock
    Explanation
    The tail stock is used to hold taper shank tools such as drill chucks and live centers. It is located on the opposite end of the headstock in a lathe machine. The tail stock provides support and stability to the workpiece while it is being machined. It can be adjusted to accommodate different lengths of tools and workpieces.

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  • 23. 

    At what speed (rpm) must a 1/2" diameter high speed steel drill rotate when drilling aluminum. Use the following formula. RPM = Cutting Speed x 4 / Diameter of drill or milling Cutter Available information:
    • Cutting speed for aluminum = 400
    • Diameter of drill = 1/2" (.500)

    • 400 rpm

    • 1600 rpm

    • 3200 rpm

    Correct Answer
    A. 3200 rpm
    Explanation
    The formula given is used to calculate the RPM (rotation per minute) required for drilling aluminum. The cutting speed for aluminum is given as 400. The diameter of the drill is given as 1/2" or 0.500. Plugging these values into the formula, we get: RPM = 400 x 4 / 0.500 = 3200. Therefore, the correct answer is 3200 rpm.

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  • 24. 

    Which drill bit has the largest diameter?

    • Number 10

    • Letter A

    • 15/64

    Correct Answer
    A. 15/64
    Explanation
    The answer 15/64 is the largest diameter among the given options. The other options, Number 10 and Letter A, do not provide specific measurements or units of diameter. Therefore, 15/64 is the correct answer as it represents a specific measurement of diameter.

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  • 25. 
    What is the reading on the outside micrometer shown below? - ProProfs

    What is the reading on the outside micrometer shown below?

    • .430

    • .455

    • .405

    Correct Answer
    A. .430
    Explanation
    The reading on the outside micrometer shown below is .430.

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  • 26. 

    After mounting a vise on the milling machine the back jaw of the vise should be aligned with the table using an _______ .

    • Indicator

    • Edge finder

    • Electronic caliper

    Correct Answer
    A. Indicator
    Explanation
    After mounting a vise on the milling machine, it is important to align the back jaw of the vise with the table to ensure accurate and precise machining. An indicator is commonly used for this purpose. The indicator helps in measuring and detecting any misalignment between the vise and the table. By using the indicator, the operator can adjust the vise position until the back jaw is perfectly aligned with the table, ensuring proper machining operations.

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  • 27. 

    Which tool is used to de-burr holes?

    • Countersink

    • Counterbore

    • Counter balance

    Correct Answer
    A. Countersink
    Explanation
    A countersink tool is used to de-burr holes. It is designed to create a conical recess in the surface of a material, allowing the screw or bolt to sit flush with the surface. This helps to prevent any sharp edges or burrs from forming around the hole, ensuring a smooth and clean finish. Counterbore, on the other hand, is used to create a flat-bottomed hole with a larger diameter than the screw head, and counterbalance is unrelated to the process of de-burring holes.

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  • 28. 

    What size tap drill is used for a 3/8 - 24 UNF thread?

    • 5/16

    • Letter Q

    • 3/8

    Correct Answer
    A. Letter Q
    Explanation
    The correct answer is "Letter Q". In the Unified National Fine (UNF) thread system, the tap drill size for a 3/8-24 UNF thread is determined by the letter Q. The letter Q corresponds to a tap drill size of 0.332 inches.

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  • 29. 

    What size tap drill is used for a 1/4 - 20 UNC thread.

    • 1/4

    • Number 7

    • Number 3

    Correct Answer
    A. Number 7
    Explanation
    The correct answer is Number 7. In the Unified National Coarse (UNC) thread system, a 1/4 - 20 thread refers to a 1/4 inch diameter bolt with 20 threads per inch. To tap a hole for this thread, a Number 7 tap drill size is used. The tap drill size is slightly smaller than the bolt diameter to create the correct thread size and ensure proper engagement between the bolt and the tapped hole.

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  • 30. 

    In the following thread information what does the first number represent? 1/4 - 20 UNC

    • The major diameter of the thread is .250 inch

    • There are 14 threads per inch

    • A 1/4" diameter hole should be drilled

    Correct Answer
    A. The major diameter of the thread is .250 inch
    Explanation
    The first number in the thread information represents the major diameter of the thread, which is .250 inch.

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  • Current Version
  • Mar 19, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Jan 10, 2012
    Quiz Created by
    Mark Weaver
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