1. : What does PCB stand for?
(A) Printed Circuit Board
(B) Parallel Conduction Base
(C) Primary Circuit Board
(D) Processed Copper Board
2. : The most commonly used material for PCB substrate is:
(A) Copper
(B) FR4
(C) Silicon
(D) Aluminum
3. : Which of the following is used to etch copper in PCB fabrication?
(A) Hydrochloric acid
(B) Nitric acid
(C) Ferric chloride
(D) Sodium hydroxide
4. : In PCB terminology, a “via” is used to:
(A) Connect layers
(B) Increase resistance
(C) Mount components
(D) Provide insulation
5. : What is the main purpose of a solder mask?
(A) Conduct electricity
(B) Protect copper traces
(C) Dissolve flux
(D) Add mechanical strength
6. : Which layer is typically green in a PCB?
(A) Copper layer
(B) Substrate
(C) Solder mask
(D) Silkscreen
7. : The topmost printed layer in a PCB that shows component labels is:
(A) Copper layer
(B) Ground plane
(C) Solder mask
(D) Silkscreen
8. : The copper thickness in a standard PCB is usually:
(A) 1 mm
(B) 35 microns
(C) 100 microns
(D) 1 micron
9. : Which software is commonly used for PCB design?
(A) AutoCAD
(B) Eagle
(C) Blender
(D) Adobe Illustrator
10. : What is the purpose of a ground plane in a PCB?
(A) Increase voltage
(B) Act as a cooling surface
(C) Reduce electromagnetic interference
(D) Store data
11. : Double-sided PCBs have copper tracks:
(A) Only on the top
(B) Only on the bottom
(C) On both sides
(D) Inside the board
12. : The process of transferring the PCB layout to copper board is called:
(A) Etching
(B) Drilling
(C) Printing
(D) Imaging
13. : What is the Gerber file used for?
(A) Writing firmware
(B) Simulating circuits
(C) Fabricating PCBs
(D) Testing components
14. : In PCB design, DRC stands for:
(A) Design Rule Check
(B) Device Routing Circuit
(C) Direct Resistor Calculation
(D) Dual Relay Control
15. : Which of the following is not a layer in PCB design?
(A) Copper
(B) Substrate
(C) Ground
(D) Silkscreen
16. : Which component is typically not placed on the bottom layer of a single-sided PCB?
(A) Resistor
(B) Capacitor
(C) Microcontroller
(D) Connector
17. : The process of connecting components to the board is called:
(A) Tracing
(B) Plating
(C) Soldering
(D) Masking
18. : Which of these components is polarity sensitive?
(A) Resistor
(B) Capacitor (Electrolytic)
(C) Inductor
(D) Fuse
19. : A PCB with components mounted on the surface only is called:
(A) Through-hole PCB
(B) Hybrid PCB
(C) Surface Mount Technology (SMT)
(D) Multi-layer PCB
20. : In PCB manufacturing, drilling is mainly done to create:
(A) Copper traces
(B) Vias and through-holes
(C) Ground planes
(D) Silkscreen labels
21. : The minimum track width in a PCB depends on:
(A) Voltage level
(B) Current carrying capacity
(C) Board color
(D) Component size only
22. : Which is used for mechanical support and electrical connection in a PCB?
(A) Silkscreen
(B) Via
(C) Trace
(D) Pad
23. : Thermal relief is used in PCBs to:
(A) Prevent short circuits
(B) Improve soldering by limiting heat transfer
(C) Increase EMI
(D) Block signal flow
24. : What happens if trace width is too narrow for the current?
(A) Signal boosts
(B) Trace may overheat and fail
(C) Faster signal transmission
(D) PCB color changes
25. : The outermost layer of the PCB that protects from oxidation is called:
(A) Copper layer
(B) Substrate
(C) Silkscreen
(D) Solder mask