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SUMMER RESEARCH 2002

SUMMER RESEARCH 2002. Polytechnic University Mechanical Engineering. ORIENTATION. Introduction. Professor Vikram Kapila Associate Professor Room: RH 508 Phone: (718) 260-3161/3160 E-mail: vkapila@poly.edu. Name: Nathan (Sang-Hoon) Lee Room: RH 514A Phone: (718)260-3783

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SUMMER RESEARCH 2002

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  1. SUMMER RESEARCH 2002 Polytechnic University Mechanical Engineering

  2. ORIENTATION

  3. Introduction • Professor Vikram Kapila • Associate Professor • Room: RH 508Phone: (718) 260-3161/3160E-mail: vkapila@poly.edu SUMMER RESEARCH 2002 SANG-HOON LEE

  4. Name: Nathan (Sang-Hoon) Lee • Room: RH 514A • Phone: (718)260-3783 • E-mail: sparknate@yahoo.com SUMMER RESEARCH 2002 SANG-HOON LEE

  5. Teaching assistants • Name: Isaac Osei • Room: RH 514A • Phone: (718)260-3783 • E-mail: osei-isaac@yahoo.com SUMMER RESEARCH 2002 SANG-HOON LEE

  6. Laboratory rule • Don’t play • no e-mail checking, chatting, browsing web, listening music, singing, running, etc. • Don’t touch any other experiments • No food and no drink • Keep this room clean and well organized • after experiments, put them in original place with the same original condition • Respect each other • Maturity • Practice safety SUMMER RESEARCH 2002 SANG-HOON LEE

  7. Schedule Start Date: July 1, 2002(Monday) End Date: August 16, 2002(Friday) Period: 7 weeks Day: Monday - Friday Time: 10am - 4pm Lunch time: 12:40pm – 1:40pm SUMMER RESEARCH 2002 SANG-HOON LEE

  8. SUMMER RESEARCH 2002 SANG-HOON LEE

  9. Writing lab report • Prepare a lab book • Write what you learned, what you did, what you needed • Do this everyday SUMMER RESEARCH 2002 SANG-HOON LEE

  10. Making presentation • Show what you learned, what you did for a week on every Friday • Use Microsoft power point SUMMER RESEARCH 2002 SANG-HOON LEE

  11. How to make a Presentation Isaac Osei SUMMER RESEARCH 2002 SANG-HOON LEE

  12. FiveSteps • Planning • Introduction • The Body • The Conclusion • Questions • Presentation Tips SUMMER RESEARCH 2002 SANG-HOON LEE

  13. STEP 1 - Planning • Topic/Main Idea • Research • Structure • Audience • Time • Outline SUMMER RESEARCH 2002 SANG-HOON LEE

  14. STEP 2 - The INTRODUCTION • Connection • Attention • Preview • Structure SUMMER RESEARCH 2002 SANG-HOON LEE

  15. STEP 3 - The Body • Information • Speak Clearly • Follow the Outline SUMMER RESEARCH 2002 SANG-HOON LEE

  16. STEP 4 - The Conclusion • Reinforce • Summarize • Conclude SUMMER RESEARCH 2002 SANG-HOON LEE

  17. STEP 5 - Questions • Important • Prepare ahead of Time • Thank your audience SUMMER RESEARCH 2002 SANG-HOON LEE

  18. Tips for Maintaining your Audience’sAttention • Make your presentation Interactive • Share Stories • Repetition • Humor • Never Read • Move Around • Eye Contact SUMMER RESEARCH 2002 SANG-HOON LEE

  19. Ice break • Name • School • Specialty • Hobby • Goal for this summer program • Others SUMMER RESEARCH 2002 SANG-HOON LEE

  20. Making groups • make 4 groups in total SUMMER RESEARCH 2002 SANG-HOON LEE

  21. Lecture 1 SUMMER RESEARCH 2002 SANG-HOON LEE

  22. What is current? • A flow of charged particles • Carried by small negatively-charged particles, called electrons • Represented by the symbol I, and is measured in amperes, or 'amps', A. • Most often measured in milliamps, mA • Like water flow SUMMER RESEARCH 2002 SANG-HOON LEE

  23. Water analogy SUMMER RESEARCH 2002 SANG-HOON LEE

  24. What is voltage? • Potential difference, or voltage • Represented by the symbol V , and is measured in volts, V • Like potential energy at water fall SUMMER RESEARCH 2002 SANG-HOON LEE

  25. Water analogy SUMMER RESEARCH 2002 SANG-HOON LEE

  26. Series connection of cells • Each cell provides 1.5 V. Two cells connected one after another, inseries, provide 3 V, while three cells would provide 4.5 V SUMMER RESEARCH 2002 SANG-HOON LEE

  27. Parallel connection of cells • If the cells are connected in parallel, the voltage stays at 1.5 V, but the life of the battery is doubled SUMMER RESEARCH 2002 SANG-HOON LEE

  28. DC and AC • A cell provides a steady voltage, so that current flow is always in the same direction. This is called direct current, or d.c • The domestic mains provides a constantly changing voltage which reverses in polarity 60 times every second. This gives rise to alternating current, or a.c SUMMER RESEARCH 2002 SANG-HOON LEE

  29. Power Supply SUMMER RESEARCH 2002 SANG-HOON LEE

  30. Resistor • A dissipative element that converts electrical energy into heat • Resistors limit current • Unit is ohms, W SUMMER RESEARCH 2002 SANG-HOON LEE

  31. resistors of different sizes SUMMER RESEARCH 2002 SANG-HOON LEE

  32. How to read resistor value • By color code • By digital multi meter(DMM) SUMMER RESEARCH 2002 SANG-HOON LEE

  33. How to read resistor value1. By color code Resistor value= SUMMER RESEARCH 2002 SANG-HOON LEE

  34. Tolerance Number Color Color 0 ±1% black brown 1 brown ±2% red 2 ±5% red gold 3 ±10% orange silver 4 yellow 5 green 6 blue 7 violet 8 grey 9 white Resistance Color code SUMMER RESEARCH 2002 SANG-HOON LEE

  35. example • The first band is yellow, so the first digit is 4 • Second digit is a violet band, making the second digit 7 • A red band is 2 • Resistor value is SUMMER RESEARCH 2002 SANG-HOON LEE

  36. Metric Units and conversions Abbreviation Means Multiply unit by Or p pico .000000000001 10 -12 n nano .000000001 10 -9 µ micro .000001 10 -6 m milli .001 10 -3 . Unit 1 10 0 k kilo 1,000 10 3 M mega 1,000,000 10 6 G giga 1,000,000,000 10 9 SUMMER RESEARCH 2002 SANG-HOON LEE

  37. example SUMMER RESEARCH 2002 SANG-HOON LEE

  38. Digitalmultimeter • Voltmeter • Parallel connection • Ammeter • Series connection • Ohmmeter • Without any power supplied • Adjust range(start from highest limit if you don’t know) SUMMER RESEARCH 2002 SANG-HOON LEE

  39. Resistorsinseries Rtotal=R1+R2 Rtotal=1+1=2kohm SUMMER RESEARCH 2002 SANG-HOON LEE

  40. Resistorsinparallel SUMMER RESEARCH 2002 SANG-HOON LEE

  41. Exercise SUMMER RESEARCH 2002 SANG-HOON LEE

  42. Potentiometer • Has a adjustable resistance • Circular potentiometer • Linear potentiometer • Use as a position sensor SUMMER RESEARCH 2002 SANG-HOON LEE

  43. Potentiometer SUMMER RESEARCH 2002 SANG-HOON LEE

  44. Potentiometer SUMMER RESEARCH 2002 SANG-HOON LEE

  45. Linearpotentiometer SUMMER RESEARCH 2002 SANG-HOON LEE

  46. Linearpotentiometer SUMMER RESEARCH 2002 SANG-HOON LEE

  47. Linearpotentiometer SUMMER RESEARCH 2002 SANG-HOON LEE

  48. Lecture 2 SUMMER RESEARCH 2002 SANG-HOON LEE

  49. Capacitors • store electric charge • consists of two plates of a conducting material separated by a space filled by an insulator • measured in units called farads, F SUMMER RESEARCH 2002 SANG-HOON LEE

  50. Howtoreadcapacitorvalue • The first two figures give us 10, the third figure gives us 0000, and the letter 10%. We normally express this as 0.1µF SUMMER RESEARCH 2002 SANG-HOON LEE

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