Fab Test P3 - MDEF 2023-24

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Please select the multiple-choice option that BEST corresponds to each question. In total, there are 21 questions. If you want to change an answer, simply click the button for your new choice. Please be sure of all your answers before you submit your document. You will only be allowed to send one document per person.

When you are finished, the "Submit" button at the end of the quiz. You can then click on "View Score" to see your final score out of 21 points. All of the correct answers will then be marked with a green check mark. For incorrect answers, you will be provided the correct answer that was missed as a guide for additional study. To pass successfully, you will need to answer at least 75% of the questions correctly to pass.

In 30 minutes SHARP, this Google Form will no longer be accepting results. Any results not submitted within this hour will not be counted. Students will be required to retake the test on another day. Please keep in mind that the subsequent test will consist of different questions than the ones provided below.

IMPORTANT: Attendance will be mandatory and test results will only be considered if the student is present.

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In CNC Milling, which is NOT an appropriate material to use on our machines in p102?
*

1 point

Polycarbonate

Cork

Steel

Alucobond

Which of these parameters need to be considered when CNC milling? *

1 point

Bit size and shape, and power

Feed rate, bit size and shape

Milling path, speed, and frequency

Power, speed and total cut depth

In CNC Milling, what is the Step-Down? *

1 point

The distance between the tool paths in Z-Axis

The maximum dimensions of the bounding box in the Z-Axis

The distance between the tool-paths in XY-Axes

The offset distance between the home coordinates

In CNC Milling, what should you do in case of an emergency and need to immediately stop the CNC machine? *

1 point

Press the space bar

Press the master switch

Press the red e-stop button

Turn off the circuit breaker

In CNC Milling, what is the proper way to avoid colliding a milling bit with the screws and damaging the bit? *

1 point

By setting a safe plane height so the milling bit will travel over the screws

By using milling bits that can mill metal

By using an engraving strategy to mark the exact location of the screws on the board

By precisely measuring the distance from every side of the workpiece using callipers

In CNC Milling, Why are bridges added while you run a profiling 2-axis strategy in CNC Milling?
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1 point

To perform manual sanding to get the best finish

To provide a textured detail to profiling

To reduce the cutting speed at regular intervals

To prevent the cut pieces from flying out of the stock material

In CNC Milling, how can you reduce the manufacturing time?
*

1 point

Set the stepdown to 80% of the diameter of the tool

Skip the horizontal roughting and directly to parallel finishing by 25%

Post all the operation in a single Gcode

Use a mill bit with a larger diameter

In CNC Milling, what is a post-processor? *

1 point

Special equipment used to create surface effects on the machining result that cannot be achieved through milling alone

The processor that controls the movements of the CNC machine's individual axes

A program that outputs the tool-paths generated by the cam software in a format that is readable by a particular CNC machine's control software

A program that calculates the deviation from the machining result to the desired geometry

In CNC Milling, what is the Step-Over? *

1 point

The maximum dimensions of the bounding box in the XY-Axes

The offset distance between the milling bit

The distance between the tool-paths in Z-Axis

The distance between the tool paths in XY-Axes

In CNC Milling, what is the difference between a milling bit and a drilling bit? *

1 point

A milling bit has standardised diameters and only fits on the milling machine

A drilling bit only cuts in 1 axis while a milling bit can cut sideways

A milling bit has a specific flute angle

A drilling bit has a sharp pointy tip, while a milling bit does not

While CNC Milling, when should I clean?
*

1 point

At the end of the day

The cleaning person will take care of the cleaning

While it is milling

Directly after milling

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