electrical engineering

Assignment-4

1. What is soldering and what are some safety rules to follow while soldering?

2. Watch the video titled “Circuit Board Assembly at SMA's German Factory” in Lesson-5 and answer the questions below:

a. What are the typical SMD components?

b. Why are the boards that are designed coated with a protective layer?

c. How many circuit boards can SMA produce per minute?

d. How are the circuit boards tested?

3. What is a network diagram and what is it used for?

4. Explain why a network diagram cannot contain cycles. A cycle is a sequence of activities where you can travel back to an activity already visited.

5. What is the difference between a network diagram and a state diagram?

6. What is the difference between a flowchart and a state diagram?

7. Select any system of your choice and create a state diagram or flowchart to explain its functionalities.

8. Consider the set of activities, duration (in days), and predecessors for a project given in the table below.

Activity A B C D E F G H I J K

Duration 9 12 3 4 5 9 8 3 6 9 1

Predecessors A A B, C C B D F, D G H, I E

a. Develop a network diagram representation for the project.

b. Determine the critical path.

c. Determine the float time for all activities that are not on the critical path.