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Get All Weeks 3D Printing Hardware Coursera Quiz Answers
Week 01: 3D Printing Hardware Coursera Quiz Answers
Quiz 02: Practice Quiz 1.1
Q1. What kind of 3D printer uses a powder as a material to print with?
[expand title=View Answer]Powder bed fusion [/expand]
Q2. This kind of 3D printer uses a liquid to create a 3D object
[expand title=View Answer] Stereo Lithography (SLA) [/expand]
Q3. Who started the RepRap movement?
[expand title=View Answer]Adrian Bowyer [/expand]
Q4. This is the most popular type of desktop 3D printer today.
[expand title=View Answer] Fused Filament Fabrication [/expand]
Q5. How long has 3D printing been around?
[expand title=View Answer] 30+ years[/expand]
Q6. 3D printer kits always have excellent directions to assemble.
[expand title=View Answer] False [/expand]
Q7. FFF 3D printers use what material to print with?
[expand title=View Answer] Filament [/expand]
Quiz 03: Practice Quiz 1.2
Q1. What are the key components of an SLA printer?
[expand title=View Answer] A and C [/expand]
Q2. What is the advantage of an SLA printer?
[expand title=View Answer] Higher resolution[/expand]
Q3. What do you often trade-off when considering budget printers?
[expand title=View Answer] Advanced features [/expand]
Q4. Which of these is not a common class of 3D printer?
[expand title=View Answer] Tinker [/expand]
Q5. Where might you find options to 3D print without owning a 3D printer?
[expand title=View Answer]
1.Makerspace
2.Library
3.Local enthusiast group
4.All of the above
[/expand]
Quiz 03:Module 1
Q1. Operator A says that 3D printers can print anything, and Operator B says they can only print in specific materials. Which one is correct?
[expand title=View Answer] Operator B[/expand]
Q2. When considering a kit printer vs a pre-built machine, what considerations should you make in this choice that are critical in the comparison?
[expand title=View Answer]
1.How much time it takes to build the kit
2.What kind of motion system they use
3.Shipping Costs
[/expand]
Q3. According to the lectures, which of these is a critical point to consider when looking to purchase a machine for professional/institutional use?
[expand title=View Answer] Will the company be around to provide support in the future [/expand]
Q4. Person A says that the RepRap movement is largely the reason we have desktop 3D printers today, Person B says, desktop 3D printers were developed by large companies to enter new markets.
[expand title=View Answer] Person A[/expand]
Q5. Operator A says budget 3D printers are the best option for cost, Operator B says Budget 3D printers have limitations and often don’t offer any typeof troubleshooting or support.
[expand title=View Answer] Operator B[/expand]
Q6. Select the components of a 3D printer that allow it to create a part.
[expand title=View Answer]
1.Build Platform
2.Tool Head
[/expand]
Q7. Operator A says, building a kit 3D printer is an excellent choice because when you build it you learn the ins and outs of the machine and it can be easier to work with, Operator B says professional desktop machines are an excellent choice because they provide documentation and support to troubleshoot issues with.
[expand title=View Answer]Both Operators A and B [/expand]
Q8. What is the reason why 3D printing has not become ubiquitous in the world today?
[expand title=View Answer] The mass market didn’t all have the needs [/expand]
Q9. What opportunities do service bureaus offer that most 3D printing users not have the ability to do
[expand title=View Answer]
1.Exotic Materials
2.Large build volumes
[/expand]
Q10. Which of these terms are synonymous with one another?
[expand title=View Answer] Fused Deposition Modeling (FDM) and Fused Filament Fabrication (FFF) [/expand]
Week 02: 3D Printing Hardware Coursera Quiz Answers
Quiz 02: Practice Quiz 2.1
Q1. Which of the following is not one of the subsystems discussed in this module?
[expand title=View Answer] Filament [/expand]
Q2. The interactive interface is used to do what type of actions?
[expand title=View Answer] Select processes on the printer
[/expand]
Q3. Desktop 3D printers are as simple to operate as a standard color paper printer
[expand title=View Answer] False [/expand]
Quiz 02: Practice Quiz 2.2
Q1. What are some of the important areas to familiarize yourself with in your interactive interface?
[expand title=View Answer]
1.How to cancel a print
2.How to start a print
3.How to calibrate the printer
4.All of the above
[/expand]
Q2. What are some of the more modern 3D printers used for displays?
[expand title=View Answer] Touchscreen [/expand]
Q3. What is firmware?
[expand title=View Answer] The interactive interface menu system
[/expand]
Quiz 02: Practice Quiz 2.
Q1. What is the standard coordinate system used in 3D printing?
[expand title=View Answer]Cartesian
[/expand]
Q2. What is the main purpose of the endstops?
[expand title=View Answer] Establish an initial position (home)
[/expand]
Q3. What kind of print bed has the ability to print any size object in 1 direction?
[expand title=View Answer] Belted[/expand]
Quiz 03: Module 2 Quiz
Q1. What menu option is the most logical to use when a print is failing?
[expand title=View Answer]Abort Print [/expand]
Q2. A 3D Printer controller board will take inputs from which sensors in order to control the motion system?
[expand title=View Answer]
1. Endstops
2. Thermistor
[/expand]
Q3. When the Control System is sending signals to the rest of the machine to begin a print, why doesn’t the machine just turn the heater on permanently til temp is reached?
[expand title=View Answer] To allow the sensor data to provide feedback while heating[/expand]
Q4. Operator A says PID controls are used to provide feedback to the printer so it can monitor itself while printing. Operator B says you can tune PID controls on a printer if you want to work with new materials. Which is correct?
[expand title=View Answer] Both Operators A and B [/expand]
Q5. Operator A says the firmware is the software that interprets the gcode and gives instructions to the printer, Operator B says most 3D printers today operate on 32-bit processors to keep up with the demands of high-speed printing. Which is correct?
[expand title=View Answer]Operator B [/expand]
Q6. Which of the following is what processes the gcode into coordinate values?
[expand title=View Answer] MCU [/expand]
Q7. What shape is a Delta printer’s build envelope?
[expand title=View Answer] Cylinder [/expand]
Q8. Operator A says the build envelope is smaller than the interior of the machine because manufacturers want to limit your part size. Operator B says it’s because they have to compensate for the motion system’s physical size. Which is correct?
[expand title=View Answer] Both Operators A and B [/expand]
Q9. How does the firmware compensate for the type of machine you use (cartesian, delta, polar, etc.)?
[expand title=View Answer] It uses an algorithm to change gcode into the appropriate steps of the motor [/expand]
Q10. Which of these are outputs that the control system operates?
[expand title=View Answer]
1.Hotend fan
2.Y Stepper Motor
3.Endstop
[/expand]
Week 03: 3D Printing Hardware Coursera Quiz Answers
Quiz 01: Practice Quiz 3.1
Q1. What type of extrusion system uses a stepper motor housed on the tool head?
[expand title=View Answer] Direct Drive[/expand]
Q2. The Hot End contains the following things
[expand title=View Answer]
1.Hot Zone
2.Cold Zone
3.Heartbreak
4.Nozzle
5.All of the above
[/expand]
Q3. The PID loop in the hotend controls what?
[expand title=View Answer] The moderation of temperature [/expand]
Q4. What is the most common nozzle size and material in 3D printing?
[expand title=View Answer] .4mm Brass [/expand]
Q5. Why is active cooling important in 3D printing?
[expand title=View Answer] It allows certain materials to quickly stabilize and hold their position in a 3D space[/expand]
Q6. What feature of a build plate is most commonly used and versatile in desktop 3D printing?
[expand title=View Answer] Heated Build Plate[/expand]
Quiz 02 : Practice Quiz 3.2
Q1. What is the most commonly used material in desktop 3D printing?
[expand title=View Answer]PLA
[/expand]
Q2. What types of plastics are not used in desktop 3D printing?
[expand title=View Answer]Thermoset
[/expand]
Q3. What are some considerations for 3D printing equipment when looking to print Polycarbonate or Nylon?
[expand title=View Answer]Drybox
[/expand]
Quiz 03: Module 3 Quiz
Q1. What advantage does a Bowden extrusion system have over direct drive?
[expand title=View Answer] Lower mass on the tool head[/expand]
Q2. Operator A says the hotend is going to heat up the filament above the glass transition temperature of the material. Operator B says the hotend is going to heat it up to the melting point of the material.
[expand title=View Answer]Operator B [/expand]
Q3. The purpose of the heat break is to
[expand title=View Answer] Prevent heat creep into the cold end [/expand]
Q4. Why would anyone consider using a larger nozzle size than the standard .4mm
[expand title=View Answer]
1.Print faster
2.Print new materials
[/expand]
Q5. When considering materials you are printing with, why is active cooling not always used?
[expand title=View Answer]
1.Some materials warp from cooling
2.Some materials are printed cold
[/expand]
Q6. Why is build plate surface preparation and materials so important for desktop 3D printing?
[expand title=View Answer] The part being printed needs to stay firmly planted on the building plate [/expand]
Q7. What material is best suited for mechanical functional parts on a non-enclosed printer?
[expand title=View Answer] PETG[/expand]
Q8. User A says that PLA is perfectly fine to use in a hot environment. User B says it would be better to use PETG or ABS. Which user is correct?
[expand title=View Answer]User B [/expand]
Q9. If you were to make a part that had to be very durable and strong what material would be the best option?
[expand title=View Answer] Nylon[/expand]
Q10. User A says using a larger nozzle like .6mm would make your prints take less time. User B says using a .6mm nozzle would give your model less detail. Which user is correct?
[expand title=View Answer] User A[/expand]
Week 04: 3D Printing Hardware Coursera Quiz Answers
Quiz 01: Practice Quiz 4.1
Q1. After a digital design is created, what is the next step in the process before you can print it?
[expand title=View Answer] Put the digital design into a slicer [/expand]
Q2. Which of the following best describes a mesh file?
[expand title=View Answer] A file that describes the surface geometry of an object by using polygons to represent the surfaces [/expand]
Q3. What type of file format should I export if I want to print a multi-color object?
[expand title=View Answer] OBJ [/expand]
Quiz 02: Practice Quiz 4.2
Q1. Which of these is the most commonly used and largest database of downloadable 3D models?
[expand title=View Answer] Thingiverse [/expand]
Q2. Which is the most logical progression of a digital file?
[expand title=View Answer] Model>Export>Slice>Job File[/expand]
Q3. Which type of mesh file contains surface geometry and color data for printing in a single file?
[expand title=View Answer]OBJ [/expand]
Quiz 03: Module 4 Quiz
Q1. Which of these is a repository for finding 3D printable models?
[expand title=View Answer] TinkerCAD [/expand]
Q2. Why don’t unsupported overhangs print well?
[expand title=View Answer] Without support, the molten plastic will droop[/expand]
Q3. User A says a Job File will only provide instructions to the printer on what to do, User B says that a Job File is only produced by using a slicing software. Which of these two users is correct?
[expand title=View Answer] User B [/expand]
Q4. What must you do with a 3D scanned file to 3D print it?
[expand title=View Answer] Translate the file into a mech surface geometry file [/expand]
Q5. If you download a file from Thingiverse, what is the next step you would take to 3D print it?
[expand title=View Answer] Import it into a slicer [/expand]
Q6. Operator A says a Multicolor desktop printer can use an OBJ file to print with multiple colors, Operator B says a multi-color desktop printer uses multiple STL files. Which Operator is correct?
[expand title=View Answer] Operator B[/expand]
Q7. When a digital design is being created what considerations should you be thinking about for 3D printing?
[expand title=View Answer]
1.Strength in the XY plane
2.Overhangs
3.Printing speed
4.All of the above
[/expand]
Q8. What does the job file have to do with the subsystems of a 3D printer?
[expand title=View Answer] The job file and slicer both talk to the printer to tell it what to do[/expand]
Q9. Which change in the slicer will lower the time to print an object the most?
[expand title=View Answer] Lowering the infill from 20% to 10% [/expand]
Q10. What impact does infill type and percentage have on a print?
[expand title=View Answer]
1. More infill means the part will be stronger
2. More infill means it will print slower
3. Infill type can make a part stronger or weaker
4. All of the above
[/expand]
Week 05: 3D Printing Hardware Coursera Quiz Answers
Quiz 01: Practice Quiz 5.1
Q1. Why is keeping the box from the printer a good idea?
[expand title=View Answer]Easier to ship it back if there is a defect [/expand]
Q2. Which of these is not a common 1st time print challenge?
[expand title=View Answer] Print needed supports[/expand]
Q3. What is the “hello world” print?
[expand title=View Answer] A print that says the words “Hello World” [/expand]
Quiz 02: Practice Quiz 5.2
Q1. Which is not a type of bed leveling system?
[expand title=View Answer] Self Leveling [/expand]
Q2. Which is the most common type of leveling system on a 3D printer?
[expand title=View Answer]Manual Leveling [/expand]
Q3. Why is having a routine checklist important?
[expand title=View Answer]
1.Lowers risk of a failed print
2.Lowers the need for maintenance
3.Improves print speed
[/expand]
Quiz 03: Module 5 Quiz
Q1. Operator A says that 3D printer bearings don’t have any excessive load so they don’t need to be lubricated aside from when the factory does it. Operator B says you should lubricate rails every month to properly maintain the machine. Who is correct?
[expand title=View Answer] Operator B [/expand]
Q2. What is the most common failure that a new 3D printer user and machine might experience?
[expand title=View Answer] Parts won’t stick to the build plate [/expand]
Q3. What is the most logical thing to do before starting a long print?
[expand title=View Answer] Make sure there is enough filament [/expand]
Q4. When you see this, what does that mean for the nozzle to build plate distance?
[expand title=View Answer] The nozzle is too far from the build plate [/expand]
Q5. If your bed leveling is not correct, what implications can that have on the part you are building?
[expand title=View Answer]
1. Inaccurate tolerances
2. Part comes loose from the bed
3. Difficulty removing the part from the bed after printing
4. All of the above
[/expand]
Q6. When you hear popping sounds when printing what is this an indication of?
[expand title=View Answer]The filament has too much moisture [/expand]
Q7. Which is true about storing filament properly?
[expand title=View Answer] It should be stored it in a ziplock bag with desiccant [/expand]
Q8. After prolonged use what is a common item to check to ensure proper printing?
[expand title=View Answer] Belt tension [/expand]
Q9. If you print the “hello world” print and the part fails on a brand new printer, which is likely the culprit?
[expand title=View Answer]The bed is not properly leveled [/expand]
Q10. Operator A says when printing you should always watch a printer since they often fail randomly, Operator B says if the first few layers are successful the chances of a successful print are high. Which is correct?
[expand title=View Answer] Operator B [/expand]
Week 06: 3D Printing Hardware Coursera Quiz Answers
Quiz 01: Practice Quiz 6.1
Q1. After starting a print it is best practice to.
[expand title=View Answer] Watch the first layer [/expand]
Q2. When prints are finished for functional use what would be an appropriate measure of success?
[expand title=View Answer] Accuracy of the part [/expand]
Q3. After the print is done and you have removed your part you should
[expand title=View Answer] Clear off any remnants of printed material from the build plate [/expand]
Quiz 02: Practice Quiz 6.2
Q1. When sanding a part to achieve a high-quality finish, you should
[expand title=View Answer] Hand sand[/expand]
Q2. Sanding parts to a very smooth finish should
[expand title=View Answer] Start with dry sanding and end with wet sanding [/expand]
Q3. Assembly of printed parts can be done by using
[expand title=View Answer]
1.Glue
2.Epoxy
3.Fasteners
4.All of the above
[/expand]
Quiz 03: Module 6 Quiz
Q1. If the first layer is sparsely printed what is the best course of action?
[expand title=View Answer]Pause the print and take a closer look [/expand]
Q2. When a part is complete and you are inspecting it, what could be a potential issue if you find the part has warped from the print bed?
[expand title=View Answer]B and C [/expand]
- The material had too much moisture
- The bed was not properly level
- The bed was not properly prepped
- A and B
- B and C
- A and C
Q3. Before starting a new print what should you check pertaining to the build surface?
[expand title=View Answer]
1.It is free from previous print material
2.It is properly prepped with glue or other surface treatments if needed
3.It is properly secured in place
4.All of the above
[/expand]
Q4. Why should you keep sanding speeds low when finishing a 3D-printed part?
[expand title=View Answer] To prevent the material from changing color [/expand]
Q5. When finishing a 3D printed part, what is the recommended finishing grit sandpaper?
[expand title=View Answer] 1000 grit[/expand]
Q6. Operator A says you can use Super Glue on any printed part. Operator B says some materials don’t bond well with Super Glue and you should use epoxy resins instead. Which operator is correct?
[expand title=View Answer] Operator B [/expand]
Q7. What are common modifications to a 3D printer to help print large structures quickly?
[expand title=View Answer]
1.Enclosure
2.Larger Nozzle
3.Flexible print surface
[/expand]
Q8. Operator A runs a printing service with 50 printers. They have to lubricate the bearings once every 2 weeks on a routine schedule. Operator B runs a single printer at home for 20 hours a week and they say they lubricate their bearings every month. Who has the correct approach?
[expand title=View Answer]Operator A [/expand]
Q9. What is the most appropriate location to find information on how to take apart your printer’s extruder?
[expand title=View Answer] The manufacturer’s website [/expand]
Q10. Operator A is having difficulty printing with nylon. They say the prints warp frequently. Operator B has perfect nylon prints and they say they just added a larger nozzle, an enclosure, and a new extruder to their machine. Which modification has made the most significant impact on printing nylon for Operator B?
[expand title=View Answer] None it was done in the slicer [/expand]
Conclusion:
We trust that this video, offering “3D Printing Hardware Coursera Quiz Answers,” has been a valuable asset on your educational journey into the world of 3D printing hardware. Understanding the hardware is a foundational step in mastering the art and science of 3D printing.
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