Advanced Electronics Lab – MCQs

1. Advanced Electron: What is the primary purpose of an electronics lab?
(A) Theory reading
(B) Hardware assembly only
(C) Practical implementation and testing of electronic circuits
(D) Circuit drawing only

2. : Which instrument is commonly used to observe waveforms?
(A) Multimeter
(B) Power supply
(C) Oscilloscope
(D) Signal generator

3. : A function generator is used to:
(A) Supply DC power
(B) Measure voltage
(C) Generate different waveform signals
(D) Measure resistance

4. : What does a breadboard allow you to do?
(A) Print PCBs
(B) Program microcontrollers
(C) Build and test circuits without soldering
(D) Store circuit diagrams

5. : Which component is polarized and must be connected correctly?
(A) Resistor
(B) Inductor
(C) Capacitor (electrolytic)
(D) Diode

6. : What is the use of a multimeter?
(A) Viewing signal shapes
(B) Generating frequencies
(C) Measuring voltage, current, and resistance
(D) Producing power

7. : The color bands on a resistor indicate its:
(A) Capacitance
(B) Voltage rating
(C) Resistance value
(D) Power output

8. : A regulated power supply provides:
(A) Fluctuating voltage
(B) Fixed current
(C) Stable and adjustable voltage
(D) Only AC supply

9. : Which safety precaution is essential in an electronics lab?
(A) Wearing gloves only
(B) Avoiding ventilation
(C) Turning off power before modifying a circuit
(D) Handling components with wet hands

10. : An op-amp is generally used for:
(A) Power regulation
(B) Voltage measurement
(C) Signal amplification
(D) Temperature control

11. : The maximum current that a breadboard typically handles is:
(A) 5 mA
(B) 500 mA
(C) 5 A
(D) 10 A

12. : Soldering is used to:
(A) Connect components temporarily
(B) Join components permanently
(C) Heat components
(D) Cool down circuits

13. : Which of the following components stores energy in the form of an electric field?
(A) Diode
(B) Resistor
(C) Capacitor
(D) Inductor

14. : A digital multimeter can measure:
(A) Only voltage
(B) Voltage and current only
(C) Voltage, current, resistance, and continuity
(D) Resistance only

15. : The frequency range of most lab function generators is typically:
(A) 0.01 Hz – 10 Hz
(B) 100 Hz – 1 kHz
(C) 0.1 Hz – 1 MHz
(D) 1 MHz – 100 MHz

16. : A logic analyzer is used to debug:
(A) Analog signals
(B) High voltage supplies
(C) Digital circuits
(D) Transformers

17. : Which software is commonly used for circuit simulation?
(A) MS Word
(B) Proteus
(C) VLC
(D) MATLAB

18. : A decoupling capacitor is used to:
(A) Increase resistance
(B) Remove high-frequency noise
(C) Short the circuit
(D) Provide power

19. : What does PCB stand for?
(A) Printed Conduction Board
(B) Printed Circuit Board
(C) Power Circuit Board
(D) Programmable Chip Base

20. : An LED emits light when:
(A) AC flows through it
(B) Reverse biased
(C) Forward biased with sufficient voltage
(D) Heated

21. : The component that allows current to flow in one direction only is:
(A) Capacitor
(B) Diode
(C) Resistor
(D) Transformer

22. : In a lab, a waveform can be saved and analyzed later using a:
(A) Function generator
(B) CRO
(C) Digital storage oscilloscope (DSO)
(D) Analog voltmeter

23. : What is the function of a heat sink in a circuit?
(A) Reduce voltage
(B) Increase resistance
(C) Dissipate heat from components
(D) Store energy

24. : The negative terminal of a polarized capacitor is usually marked with:
(A) A red stripe
(B) A plus sign
(C) A black or white stripe
(D) No marking

25. : Which component is commonly tested with the continuity mode of a multimeter?
(A) Transistor
(B) Capacitor
(C) Fuse or wire
(D) Transformer