MECHANICAL ENGINEERING DESIGN UPDATED ACTUAL QUESTIONS AND CORRECT ANSWERS FULL SOLUTION STUDY GUIDE.pdf

MECHANICAL ENGINEERING DESIGN
UPDATED ACTUAL QUESTIONS AND
CORRECT ANSWERS FULL SOLUTION
STUDY GUIDE

●● Gantt chart usage
Answer: To plan and monitor the progress of a project


●● critical path
Answer: It is the longest sequence of tasks that must be completed on
time for the project to finish on schedule


●● Gantt chart and project risks
Answer: By visualizing the schedule and dependencies, allowing
managers to foresee potential delays and adjust plans accordingly


●● length of the bar in a Gantt chart
Answer: The duration of the task


●● Mechanical Advantage (MA)
Answer: A number that tells us how many times a machine multiplies
our effort force

, ●● Mechanical Advantage of a pulley
Answer: 3 when a pulley lifts a load 5cm with 15cm of strings


●● Force applied by pulley
Answer: 375 N when using a pulley with a mechanical advantage of 1.5
and a worker applies 250 N


●● Mechanical Advantage of a lever
Answer: 6 if the lever applies a force of 1800 N to the object, then 300 N
is applied to the lever


●● Mechanical Advantage of a screwdriver
Answer: 2.5 when a force of 30 N is applied to pry the lid off a can of
paint and the screwdriver applies 75 N


●● Total Mechanical Advantage of a movable pulley system
Answer: 12 with 4 supporting strings and a mechanical advantage of 3 to
1


●● Mechanical Advantage with wheelbarrow
Answer: 5 when Amanda lifts 600 N of bricks with as little as 120 N