WorksheetsPCB(4)_Mechanical Design Considerations (2)
Total questions: 10
Worksheet time: 5mins
What is a factor to consider when deciding whether to locate components on one or more than one boards?
Color of the PCB
Type of connectors used
Shape of the available volume
Number of interconnections
What are some advantages of splitting the board into two or more boards?
Easier layout design
Fewer interconnections
Higher cost
Less maintenance
What type of machines have made it possible to have larger boards, particularly for professional boards?
Manual drilling machines
Laser cutters
3D printers
CNC machines
What is the most common method of providing electrical interface between the PCB and the associated equipment?
Glue
Welding
Screws
Connectors
What is the basic requirement of tools used for printed board extraction?
Use minimum board space
Use maximum board space
Cause damage to the board
Increase component size
What is the most common type of conductor width determined by?
Type of connectors
Component packing density
Number of layers
Board color
What introduces a voltage drop proportional to the current flowing in a particular conductor on a PCB?
Capacitance
Impedance
Resistance
Inductance
What does the resistance of a conductor on a PCB depend upon?
Specific resistivity
Color of the PCB
Thickness of the board
Number of components
What is the standard rule for the optimum thickness of printed wiring on a PCB?
10mm
5mm
1mm
There is no standard rule
Which standard specifies the performance requirements of the finished rigid printed boards?
IPC-6012
ISO 9001
ANSI/IPC 2221
IEEE 802.11
