PCB Designing Fundamentals MCQ Questions and Answers for Practice

1. A well written requirement

1. is testable by its nature
2. needs to be vague
3. has a complex sentence structure
4. uses technical verbiage

2. During post assembly testing, it was found that a latch on one of the connectors cannot be fully extended due to other components located nearby. What would have prevented this situation from occurring?

1. The use of a courtyard
2. The use of a courtyard and a component clearance rule
3. The use of a 3D component
4. The use of a 3D component and component clearance rule

3. Microvias are the same as 1 layer blind or buried vias

1. True Statement
2. False Statement

4. PCBs should be fabricated with ................ layers.

1. Any Number of
2. Odd Number of
3. Even Number of

5. Select the answer that is True Statement: Mechanical layers

1. follow an IPC standard
2. should be used in the footprint libraries for courtyards and assembly files
3. are unique to each project
4. are only declared in the PCB editor during layout

6. Silk Screens

1. Are not necessary for production boards
2. All of the above
3. Are not required for every component
4. Are highly recommended for prototype boards

7. The biggest factor when it comes to impedance is

1. The voltage level
2. The physical aspects of the board
3. Clock speed of the board crystal
4. The integrity of the signal from the output buffer of the sending component

8. The declaration of Vias-In-Pads is determined in the

1. Fabrication Files
2. Via stack up
3. Assembly Notes
4. Fabrication Notes

9. The grid used in a PCB layout tool should be

1. Both A and B interchangeably
2. Either A or B
3. In metric (mm)
4. In imperial (mils)

10. The solder mask has an impact on the trace impedance.

1. True Statement
2. False Statement

11. The solder paste files are generally produced

1. Manually drawn
2. As part of the bill of materials
3. In the assembly file
4. In the fabrication files

12. The use of 3D component models in the PCB layout can assist with

1. All of the above
2. None of the above
3. Electrical clearance
4. Component clearance

13. Though schematic tools do have to use a grid for pin connectivity, in theory, the grid used in a schematic is

1. Both A and B interchangeably
2. Dimensionless
3. In metric (mm)
4. In imperial (mils)

14. True Statement Statementor False Statement: ODB++ and Gerbers are proprietary formats

1. True Statement
2. False Statement

15. What is the best method to provide a unique number for each component in the library?

1. Use a part number that is assign by the company you work for
2. Use a part number that you make up as you go
3. Use the manufacturers part number
4. Use the vendors part number