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0925 Question

1. Hat Trick Origin

Origin in cricket

  • when a bowler accomplish three wickets, they were awarded a hat

Adopted by other sports

  • football
  • ice hockey

2. Is Purified Water Bad

Concern:

  • Lack of minerals
  • Leaching

If primary source as drinking water, could be potential health concern

3. Is Non-fat milk Really helpful

  • Dietary trends
  • Calorie concerns
  • Taste and texture

4. How CNC works

Components

  • Computer, read G-code
  • Drive motor
  • Machine table
  • Spindle: holds the tool and rotate
  • Feedback system

Control

  • PID
  • Feedforward: anticipate disturbance
  • Look-ahead: optimize path-following