# PLTW end of course Assessment for IED 2014 Directions: This is a

```PLTW end of course Assessment for IED 2014
Directions: This is a review for the end of course assessment. You will take two 40 minute tests
online using only the PLTW Engineering Formula sheet. The test is designed for 50% of students
to get 50% of the questions correct. You grade will be based on the class average = 85%. It is a
20 point assignment. Answer each of the following questions by finding the information in the
PLTW Power Point slides.
1. How does number of teeth affect spindle speed and feed rate?
2. How many degrees of freedom do the different types of robots have?
3. What does a post processor do when communicating between CAM software and a CNC
machine?
4. What are the differences between work cells and other manufacturing systems in terms of
automated machining , materials handling, and adaptability?
5. What is the difference between handmade vs. mass production manufacturing?
6. Calculate work and power
7. calculate feed based on cutter diameter, number of teeth and spindle speed
8. Interpret RobotC code using “if” and “while” statements to turn on a motor for x seconds based
on input from a light sensor.
9. What are the types of robot work envelopes
10. What is the difference between accuracy, tolerance, and repeatability in terms of robots
11. Which step of the design cycle would utilize a decision making matrix?
12. What is lean manufacturing, Six Sigma, Kaizen, and FMS
13. Explain the difference between CIM systems such as FMS, rapid, mass production, workcells
14. What is the difference between Open loop vs, closed loop
15. What are the difference cutter types and their application
16. Calculate cost of a part based on mass and price per pound
17. What is tool offset and diameter and how would they affect cutting a slot
18. What are the steps to make CNC code
19. What are variable vs. fixed costs in terms of manufacturing
20. How is a DMM used?
21. What is the NC code for absolute, relative, cut, and rapid move?
22. Interpret code N60 G01 Z-.125 F90
23. What are ethical considerations in selecting a material
24. What are the types of manufacturing costs
25. What is rapid prototyping process – additive vs subtractive
26. What is the work envelop of a Cartesian style robot
27. Primary manufacturing process vs. secondary
28. Calculate spindle speed based on cutter diameter and cutting speed
29. Calculate the cost of material based on volume and price per pound
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How is a tolerance indicated?
How do degrees of freedom affect a robot’s movement
Define a control system in terms of CIM.
List a few parts and materials that would be made with injection molding, extrusion, stamping,
and hydroforming.
List some fixed costs in manufacturing.
List the types of machines that use a subtractive process.
What are advantages of rapid prototyping?
List the G codes for absolute and relative coordinates.
What is the term for the amount of weight a robot can safely and accurately lift at the end of
the arm where the end effector mounts?
What are the differences between and incremental and absolute encoder on a robot?
Define yaw, roll, and pitch angle on a robot.
Calculate the area of a hydraulic cylinder that produces 50 psi when 25 pounds is applied.
What is the primary philosophy of the Kaizen technique in the manufacturing process?
Which type of system uses feedback from the input to control the output? (open vs. closed)
Calculate the base roll angle with x value of 700 and y of -500