FCTC Written Study Guide Questions With Correct Answers

Classes of Levers - Answer Class 1, Class 2, Class 3 Class 1 Levers - Answer Fulcrum is in the middle, with the effort (input) force on one side of the fulcrum and resistance (output) on the other side. Mechanical Advantage greater or less than 1 Ex: Seesaw, Crowbar, Pair of Scissors. Class 2 Levers - Answer Resistance is in the middle, the effort is applied on one side of the resistance and the fulcrum on the other side. Mechanical Advantage always greater than 1 Ex: Wheelbarrow, nutcracker, bottle opener, or the brake pedal of a car. Class 3 Levers - Answer Effort in the middle, the resistance is on one side of the effort and the fulcrum is located on the other side. Mechanical Advantage always less than 1 Ex: Pair of tweezers, human mandible Lever Definitions - Answer Lever machine consisting of a beam or rigid rod pivoted at a fixed hinged, or fulcrum. Input Force = Effort Output Force = Load or Resistance What does "fre, 123" mean? - Answer Fulcrum is in the middle for Class 1 Levers Resistance (output) in middle for Class 2 Effort (input) in the middle for Class 3 Formula for Determining the head pressure difference between an intake and output - Answer 1 vertical foot = 0.433 psi 1 psi = 2.31 vertical feet Overall Test Overview: - Answer 1) 30 minute period to read 2 essays - 2 hour time limit begins to answer (100 questions). 2) Watch 2 short videos and answer (20 questions) based on the scenarios. 3) Apply mechanical reasoning (25 questions, i.e. Fluid Dynamics, levers, belt and pulleys, gears) 4) Mathematical Problems (20 questions, i.e. addition, division, angles, area, volume, decimals, ratios, percentages) 5) Recall and Comprehend Technical Information (35 questions, recall from first two essays, in addition to one or two more at this time)